Detalii evaluare #54600503

Rezumat problemă

#539 DFS

Se consideră un graf neorientat cu n vârfuri și m muchii și un vârf cunoscut X. Să se afişeze vârfurile vizitate în urma parcurgerii în adâncime a grafului pornind din vârful X.

Detalii

Problema DFS Operații I/O dfs.in/dfs.out
Limita timp 1 secunde Limita memorie Total: 128 MB / Stivă 8 MB
Id soluție #54600503 Utilizator Tugui Ovidiu (Ovidiu777)
Fișier dfs.cpp Dimensiune 446 B
Data încărcării 03 Decembrie 2024, 13:24 Scor / rezultat Eroare de compilare

Evaluare


Mesaj compilare

dfs.cpp:1:2: error: stray '#' in program
 f#include <iostream>

  ^
dfs.cpp:1:1: error: 'f' does not name a type
 f#include <iostream>

 ^
In file included from /usr/include/c++/4.8/iosfwd:40:0,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/postypes.h:98:11: error: 'ptrdiff_t' does not name a type
   typedef ptrdiff_t streamsize; // Signed integral type
           ^
In file included from /usr/include/c++/4.8/exception:152:0,
                 from /usr/include/c++/4.8/ios:39,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/exception_ptr.h:95:30: error: field 'nullptr_t' has incomplete type
       exception_ptr(nullptr_t) noexcept
                              ^
/usr/include/c++/4.8/bits/exception_ptr.h:95:30: error: expected ';' at end of member declaration
/usr/include/c++/4.8/bits/exception_ptr.h:95:32: error: expected unqualified-id before 'noexcept'
       exception_ptr(nullptr_t) noexcept
                                ^
In file included from /usr/include/c++/4.8/bits/move.h:57:0,
                 from /usr/include/c++/4.8/bits/stl_pair.h:59,
                 from /usr/include/c++/4.8/bits/stl_algobase.h:64,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/type_traits:285:31: error: 'std::size_t' has not been declared
   template<typename _Tp, std::size_t _Size>
                               ^
/usr/include/c++/4.8/type_traits:419:34: error: 'nullptr_t' is not a member of 'std'
     struct __is_nullptr_t_helper<std::nullptr_t>
                                  ^
/usr/include/c++/4.8/type_traits:419:34: error: 'nullptr_t' is not a member of 'std'
/usr/include/c++/4.8/type_traits:419:48: error: template argument 1 is invalid
     struct __is_nullptr_t_helper<std::nullptr_t>
                                                ^
/usr/include/c++/4.8/type_traits:1239:32: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, __alignof__(_Tp)> { };
                                ^
/usr/include/c++/4.8/type_traits:1239:32: note: suggested alternative:
In file included from /usr/include/wchar.h:51:0,
                 from /usr/include/c++/4.8/cwchar:44,
                 from /usr/include/c++/4.8/bits/postypes.h:40,
                 from /usr/include/c++/4.8/iosfwd:40,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/lib/gcc/i686-linux-gnu/4.8/include/stddef.h:212:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^
In file included from /usr/include/c++/4.8/bits/move.h:57:0,
                 from /usr/include/c++/4.8/bits/stl_pair.h:59,
                 from /usr/include/c++/4.8/bits/stl_algobase.h:64,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/type_traits:1239:32: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, __alignof__(_Tp)> { };
                                ^
/usr/include/c++/4.8/type_traits:1239:32: note: suggested alternative:
In file included from /usr/include/wchar.h:51:0,
                 from /usr/include/c++/4.8/cwchar:44,
                 from /usr/include/c++/4.8/bits/postypes.h:40,
                 from /usr/include/c++/4.8/iosfwd:40,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/lib/gcc/i686-linux-gnu/4.8/include/stddef.h:212:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^
In file included from /usr/include/c++/4.8/bits/move.h:57:0,
                 from /usr/include/c++/4.8/bits/stl_pair.h:59,
                 from /usr/include/c++/4.8/bits/stl_algobase.h:64,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/type_traits:1239:61: error: template argument 1 is invalid
     : public integral_constant<std::size_t, __alignof__(_Tp)> { };
                                                             ^
/usr/include/c++/4.8/type_traits:1239:61: note: invalid template non-type parameter
/usr/include/c++/4.8/type_traits:1244:32: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, 0> { };
                                ^
/usr/include/c++/4.8/type_traits:1244:32: note: suggested alternative:
In file included from /usr/include/wchar.h:51:0,
                 from /usr/include/c++/4.8/cwchar:44,
                 from /usr/include/c++/4.8/bits/postypes.h:40,
                 from /usr/include/c++/4.8/iosfwd:40,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/lib/gcc/i686-linux-gnu/4.8/include/stddef.h:212:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^
In file included from /usr/include/c++/4.8/bits/move.h:57:0,
                 from /usr/include/c++/4.8/bits/stl_pair.h:59,
                 from /usr/include/c++/4.8/bits/stl_algobase.h:64,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/type_traits:1244:32: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, 0> { };
                                ^
/usr/include/c++/4.8/type_traits:1244:32: note: suggested alternative:
In file included from /usr/include/wchar.h:51:0,
                 from /usr/include/c++/4.8/cwchar:44,
                 from /usr/include/c++/4.8/bits/postypes.h:40,
                 from /usr/include/c++/4.8/iosfwd:40,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/lib/gcc/i686-linux-gnu/4.8/include/stddef.h:212:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^
In file included from /usr/include/c++/4.8/bits/move.h:57:0,
                 from /usr/include/c++/4.8/bits/stl_pair.h:59,
                 from /usr/include/c++/4.8/bits/stl_algobase.h:64,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/type_traits:1244:46: error: template argument 1 is invalid
     : public integral_constant<std::size_t, 0> { };
                                              ^
/usr/include/c++/4.8/type_traits:1244:46: note: invalid template non-type parameter
/usr/include/c++/4.8/type_traits:1246:31: error: 'std::size_t' has not been declared
   template<typename _Tp, std::size_t _Size>
                               ^
/usr/include/c++/4.8/type_traits:1248:32: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, 1 + rank<_Tp>::value> { };
                                ^
/usr/include/c++/4.8/type_traits:1248:32: note: suggested alternative:
In file included from /usr/include/wchar.h:51:0,
                 from /usr/include/c++/4.8/cwchar:44,
                 from /usr/include/c++/4.8/bits/postypes.h:40,
                 from /usr/include/c++/4.8/iosfwd:40,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/lib/gcc/i686-linux-gnu/4.8/include/stddef.h:212:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^
In file included from /usr/include/c++/4.8/bits/move.h:57:0,
                 from /usr/include/c++/4.8/bits/stl_pair.h:59,
                 from /usr/include/c++/4.8/bits/stl_algobase.h:64,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/type_traits:1248:32: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, 1 + rank<_Tp>::value> { };
                                ^
/usr/include/c++/4.8/type_traits:1248:32: note: suggested alternative:
In file included from /usr/include/wchar.h:51:0,
                 from /usr/include/c++/4.8/cwchar:44,
                 from /usr/include/c++/4.8/bits/postypes.h:40,
                 from /usr/include/c++/4.8/iosfwd:40,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/lib/gcc/i686-linux-gnu/4.8/include/stddef.h:212:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^
In file included from /usr/include/c++/4.8/bits/move.h:57:0,
                 from /usr/include/c++/4.8/bits/stl_pair.h:59,
                 from /usr/include/c++/4.8/bits/stl_algobase.h:64,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/type_traits:1248:65: error: template argument 1 is invalid
     : public integral_constant<std::size_t, 1 + rank<_Tp>::value> { };
                                                                 ^
/usr/include/c++/4.8/type_traits:1248:65: note: invalid template non-type parameter
/usr/include/c++/4.8/type_traits:1252:32: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, 1 + rank<_Tp>::value> { };
                                ^
/usr/include/c++/4.8/type_traits:1252:32: note: suggested alternative:
In file included from /usr/include/wchar.h:51:0,
                 from /usr/include/c++/4.8/cwchar:44,
                 from /usr/include/c++/4.8/bits/postypes.h:40,
                 from /usr/include/c++/4.8/iosfwd:40,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/lib/gcc/i686-linux-gnu/4.8/include/stddef.h:212:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^
In file included from /usr/include/c++/4.8/bits/move.h:57:0,
                 from /usr/include/c++/4.8/bits/stl_pair.h:59,
                 from /usr/include/c++/4.8/bits/stl_algobase.h:64,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/type_traits:1252:32: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, 1 + rank<_Tp>::value> { };
                                ^
/usr/include/c++/4.8/type_traits:1252:32: note: suggested alternative:
In file included from /usr/include/wchar.h:51:0,
                 from /usr/include/c++/4.8/cwchar:44,
                 from /usr/include/c++/4.8/bits/postypes.h:40,
                 from /usr/include/c++/4.8/iosfwd:40,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/lib/gcc/i686-linux-gnu/4.8/include/stddef.h:212:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^
In file included from /usr/include/c++/4.8/bits/move.h:57:0,
                 from /usr/include/c++/4.8/bits/stl_pair.h:59,
                 from /usr/include/c++/4.8/bits/stl_algobase.h:64,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/type_traits:1252:65: error: template argument 1 is invalid
     : public integral_constant<std::size_t, 1 + rank<_Tp>::value> { };
                                                                 ^
/usr/include/c++/4.8/type_traits:1252:65: note: invalid template non-type parameter
/usr/include/c++/4.8/type_traits:1257:32: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, 0> { };
                                ^
/usr/include/c++/4.8/type_traits:1257:32: note: suggested alternative:
In file included from /usr/include/wchar.h:51:0,
                 from /usr/include/c++/4.8/cwchar:44,
                 from /usr/include/c++/4.8/bits/postypes.h:40,
                 from /usr/include/c++/4.8/iosfwd:40,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/lib/gcc/i686-linux-gnu/4.8/include/stddef.h:212:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^
In file included from /usr/include/c++/4.8/bits/move.h:57:0,
                 from /usr/include/c++/4.8/bits/stl_pair.h:59,
                 from /usr/include/c++/4.8/bits/stl_algobase.h:64,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/type_traits:1257:32: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t, 0> { };
                                ^
/usr/include/c++/4.8/type_traits:1257:32: note: suggested alternative:
In file included from /usr/include/wchar.h:51:0,
                 from /usr/include/c++/4.8/cwchar:44,
                 from /usr/include/c++/4.8/bits/postypes.h:40,
                 from /usr/include/c++/4.8/iosfwd:40,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/lib/gcc/i686-linux-gnu/4.8/include/stddef.h:212:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^
In file included from /usr/include/c++/4.8/bits/move.h:57:0,
                 from /usr/include/c++/4.8/bits/stl_pair.h:59,
                 from /usr/include/c++/4.8/bits/stl_algobase.h:64,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/type_traits:1257:46: error: template argument 1 is invalid
     : public integral_constant<std::size_t, 0> { };
                                              ^
/usr/include/c++/4.8/type_traits:1257:46: note: invalid template non-type parameter
/usr/include/c++/4.8/type_traits:1259:47: error: 'std::size_t' has not been declared
   template<typename _Tp, unsigned _Uint, std::size_t _Size>
                                               ^
/usr/include/c++/4.8/type_traits:1261:32: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t,
                                ^
/usr/include/c++/4.8/type_traits:1261:32: note: suggested alternative:
In file included from /usr/include/wchar.h:51:0,
                 from /usr/include/c++/4.8/cwchar:44,
                 from /usr/include/c++/4.8/bits/postypes.h:40,
                 from /usr/include/c++/4.8/iosfwd:40,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/lib/gcc/i686-linux-gnu/4.8/include/stddef.h:212:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^
In file included from /usr/include/c++/4.8/bits/move.h:57:0,
                 from /usr/include/c++/4.8/bits/stl_pair.h:59,
                 from /usr/include/c++/4.8/bits/stl_algobase.h:64,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/type_traits:1261:32: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t,
                                ^
/usr/include/c++/4.8/type_traits:1261:32: note: suggested alternative:
In file included from /usr/include/wchar.h:51:0,
                 from /usr/include/c++/4.8/cwchar:44,
                 from /usr/include/c++/4.8/bits/postypes.h:40,
                 from /usr/include/c++/4.8/iosfwd:40,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/lib/gcc/i686-linux-gnu/4.8/include/stddef.h:212:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^
In file included from /usr/include/c++/4.8/bits/move.h:57:0,
                 from /usr/include/c++/4.8/bits/stl_pair.h:59,
                 from /usr/include/c++/4.8/bits/stl_algobase.h:64,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/type_traits:1263:28: error: template argument 1 is invalid
           _Uint - 1>::value>
                            ^
/usr/include/c++/4.8/type_traits:1263:28: note: invalid template non-type parameter
/usr/include/c++/4.8/type_traits:1268:32: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t,
                                ^
/usr/include/c++/4.8/type_traits:1268:32: note: suggested alternative:
In file included from /usr/include/wchar.h:51:0,
                 from /usr/include/c++/4.8/cwchar:44,
                 from /usr/include/c++/4.8/bits/postypes.h:40,
                 from /usr/include/c++/4.8/iosfwd:40,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/lib/gcc/i686-linux-gnu/4.8/include/stddef.h:212:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^
In file included from /usr/include/c++/4.8/bits/move.h:57:0,
                 from /usr/include/c++/4.8/bits/stl_pair.h:59,
                 from /usr/include/c++/4.8/bits/stl_algobase.h:64,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/type_traits:1268:32: error: 'size_t' is not a member of 'std'
     : public integral_constant<std::size_t,
                                ^
/usr/include/c++/4.8/type_traits:1268:32: note: suggested alternative:
In file included from /usr/include/wchar.h:51:0,
                 from /usr/include/c++/4.8/cwchar:44,
                 from /usr/include/c++/4.8/bits/postypes.h:40,
                 from /usr/include/c++/4.8/iosfwd:40,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/lib/gcc/i686-linux-gnu/4.8/include/stddef.h:212:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^
In file included from /usr/include/c++/4.8/bits/move.h:57:0,
                 from /usr/include/c++/4.8/bits/stl_pair.h:59,
                 from /usr/include/c++/4.8/bits/stl_algobase.h:64,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/type_traits:1270:31: error: template argument 1 is invalid
              _Uint - 1>::value>
                               ^
/usr/include/c++/4.8/type_traits:1270:31: note: invalid template non-type parameter
/usr/include/c++/4.8/type_traits:1627:31: error: 'std::size_t' has not been declared
   template<typename _Tp, std::size_t _Size>
                               ^
/usr/include/c++/4.8/type_traits:1640:31: error: 'std::size_t' has not been declared
   template<typename _Tp, std::size_t _Size>
                               ^
/usr/include/c++/4.8/type_traits:1671:17: error: 'std::size_t' has not been declared
   template<std::size_t _Len>
                 ^
/usr/include/c++/4.8/type_traits:1691:17: error: 'std::size_t' has not been declared
   template<std::size_t _Len, std::size_t _Align =
                 ^
/usr/include/c++/4.8/type_traits:1691:35: error: 'std::size_t' has not been declared
   template<std::size_t _Len, std::size_t _Align =
                                   ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:64:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/stl_pair.h:85:17: error: 'std::size_t' has not been declared
   template<std::size_t...>
                 ^
/usr/include/c++/4.8/bits/stl_pair.h:204:41: error: 'std::size_t' has not been declared
       template<typename... _Args1, std::size_t... _Indexes1,
                                         ^
/usr/include/c++/4.8/bits/stl_pair.h:205:41: error: 'std::size_t' has not been declared
                typename... _Args2, std::size_t... _Indexes2>
                                         ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:65:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/stl_iterator_base_types.h:116:67: error: expected type-specifier before 'ptrdiff_t'
   template<typename _Category, typename _Tp, typename _Distance = ptrdiff_t,
                                                                   ^
/usr/include/c++/4.8/bits/stl_iterator_base_types.h:116:67: error: expected '>' before 'ptrdiff_t'
/usr/include/c++/4.8/bits/stl_iterator_base_types.h:127:15: error: '_Pointer' does not name a type
       typedef _Pointer   pointer;
               ^
/usr/include/c++/4.8/bits/stl_iterator_base_types.h:129:15: error: '_Reference' does not name a type
       typedef _Reference reference;
               ^
/usr/include/c++/4.8/bits/stl_iterator_base_types.h:179:15: error: 'ptrdiff_t' does not name a type
       typedef ptrdiff_t                   difference_type;
               ^
/usr/include/c++/4.8/bits/stl_iterator_base_types.h:190:15: error: 'ptrdiff_t' does not name a type
       typedef ptrdiff_t                   difference_type;
               ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/stl_iterator.h:101:69: error: wrong number of template arguments (5, should be 3)
                       typename iterator_traits<_Iterator>::reference>
                                                                     ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:65:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/stl_iterator_base_types.h:118:12: error: provided for 'template<class _Category, class _Tp, class _Distance> struct std::iterator'
     struct iterator
            ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/stl_iterator.h:403:66: error: wrong number of template arguments (5, should be 3)
     : public iterator<output_iterator_tag, void, void, void, void>
                                                                  ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:65:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/stl_iterator_base_types.h:118:12: error: provided for 'template<class _Category, class _Tp, class _Distance> struct std::iterator'
     struct iterator
            ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/stl_iterator.h:494:66: error: wrong number of template arguments (5, should be 3)
     : public iterator<output_iterator_tag, void, void, void, void>
                                                                  ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:65:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/stl_iterator_base_types.h:118:12: error: provided for 'template<class _Category, class _Tp, class _Distance> struct std::iterator'
     struct iterator
            ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/stl_iterator.h:588:66: error: wrong number of template arguments (5, should be 3)
     : public iterator<output_iterator_tag, void, void, void, void>
                                                                  ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:65:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/stl_iterator_base_types.h:118:12: error: provided for 'template<class _Category, class _Tp, class _Distance> struct std::iterator'
     struct iterator
            ^
In file included from /usr/include/c++/4.8/bits/char_traits.h:39:0,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/stl_algobase.h: In static member function 'static _Tp* std::__copy_move<_IsMove, true, std::random_access_iterator_tag>::__copy_m(const _Tp*, const _Tp*, _Tp*)':
/usr/include/c++/4.8/bits/stl_algobase.h:370:10: error: 'ptrdiff_t' does not name a type
    const ptrdiff_t _Num = __last - __first;
          ^
/usr/include/c++/4.8/bits/stl_algobase.h:371:8: error: '_Num' was not declared in this scope
    if (_Num)
        ^
/usr/include/c++/4.8/bits/stl_algobase.h:373:22: error: '_Num' was not declared in this scope
    return __result + _Num;
                      ^
/usr/include/c++/4.8/bits/stl_algobase.h: In static member function 'static _Tp* std::__copy_move_backward<_IsMove, true, std::random_access_iterator_tag>::__copy_move_b(const _Tp*, const _Tp*, _Tp*)':
/usr/include/c++/4.8/bits/stl_algobase.h:565:10: error: 'ptrdiff_t' does not name a type
    const ptrdiff_t _Num = __last - __first;
          ^
/usr/include/c++/4.8/bits/stl_algobase.h:566:8: error: '_Num' was not declared in this scope
    if (_Num)
        ^
/usr/include/c++/4.8/bits/stl_algobase.h:568:22: error: '_Num' was not declared in this scope
    return __result - _Num;
                      ^
In file included from /usr/include/c++/4.8/ios:40:0,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/char_traits.h: At global scope:
/usr/include/c++/4.8/bits/char_traits.h:104:66: error: 'std::size_t' has not been declared
       compare(const char_type* __s1, const char_type* __s2, std::size_t __n);
                                                                  ^
/usr/include/c++/4.8/bits/char_traits.h:106:14: error: 'size_t' in namespace 'std' does not name a type
       static std::size_t
              ^
/usr/include/c++/4.8/bits/char_traits.h:110:39: error: 'std::size_t' has not been declared
       find(const char_type* __s, std::size_t __n, const char_type& __a);
                                       ^
/usr/include/c++/4.8/bits/char_traits.h:113:57: error: 'std::size_t' has not been declared
       move(char_type* __s1, const char_type* __s2, std::size_t __n);
                                                         ^
/usr/include/c++/4.8/bits/char_traits.h:116:57: error: 'std::size_t' has not been declared
       copy(char_type* __s1, const char_type* __s2, std::size_t __n);
                                                         ^
/usr/include/c++/4.8/bits/char_traits.h:119:35: error: 'std::size_t' has not been declared
       assign(char_type* __s, std::size_t __n, char_type __a);
                                   ^
/usr/include/c++/4.8/bits/char_traits.h:145:64: error: 'std::size_t' has not been declared
     compare(const char_type* __s1, const char_type* __s2, std::size_t __n)
                                                                ^
/usr/include/c++/4.8/bits/char_traits.h: In static member function 'static int __gnu_cxx::char_traits<_CharT>::compare(const char_type*, const char_type*, int)':
/usr/include/c++/4.8/bits/char_traits.h:147:12: error: 'size_t' is not a member of 'std'
       for (std::size_t __i = 0; __i < __n; ++__i)
            ^
/usr/include/c++/4.8/bits/char_traits.h:147:12: note: suggested alternative:
In file included from /usr/include/wchar.h:51:0,
                 from /usr/include/c++/4.8/cwchar:44,
                 from /usr/include/c++/4.8/bits/postypes.h:40,
                 from /usr/include/c++/4.8/iosfwd:40,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/lib/gcc/i686-linux-gnu/4.8/include/stddef.h:212:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^
In file included from /usr/include/c++/4.8/ios:40:0,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/char_traits.h:147:24: error: expected ';' before '__i'
       for (std::size_t __i = 0; __i < __n; ++__i)
                        ^
/usr/include/c++/4.8/bits/char_traits.h:147:33: error: '__i' was not declared in this scope
       for (std::size_t __i = 0; __i < __n; ++__i)
                                 ^
/usr/include/c++/4.8/bits/char_traits.h: At global scope:
/usr/include/c++/4.8/bits/char_traits.h:156:5: error: 'size_t' in namespace 'std' does not name a type
     std::size_t
     ^
/usr/include/c++/4.8/bits/char_traits.h:169:37: error: 'std::size_t' has not been declared
     find(const char_type* __s, std::size_t __n, const char_type& __a)
                                     ^
/usr/include/c++/4.8/bits/char_traits.h: In static member function 'static const char_type* __gnu_cxx::char_traits<_CharT>::find(const char_type*, int, const char_type&)':
/usr/include/c++/4.8/bits/char_traits.h:171:12: error: 'size_t' is not a member of 'std'
       for (std::size_t __i = 0; __i < __n; ++__i)
            ^
/usr/include/c++/4.8/bits/char_traits.h:171:12: note: suggested alternative:
In file included from /usr/include/wchar.h:51:0,
                 from /usr/include/c++/4.8/cwchar:44,
                 from /usr/include/c++/4.8/bits/postypes.h:40,
                 from /usr/include/c++/4.8/iosfwd:40,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/lib/gcc/i686-linux-gnu/4.8/include/stddef.h:212:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^
In file included from /usr/include/c++/4.8/ios:40:0,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/char_traits.h:171:24: error: expected ';' before '__i'
       for (std::size_t __i = 0; __i < __n; ++__i)
                        ^
/usr/include/c++/4.8/bits/char_traits.h:171:33: error: '__i' was not declared in this scope
       for (std::size_t __i = 0; __i < __n; ++__i)
                                 ^
/usr/include/c++/4.8/bits/char_traits.h: At global scope:
/usr/include/c++/4.8/bits/char_traits.h:180:55: error: 'std::size_t' has not been declared
     move(char_type* __s1, const char_type* __s2, std::size_t __n)
                                                       ^
/usr/include/c++/4.8/bits/char_traits.h:189:55: error: 'std::size_t' has not been declared
     copy(char_type* __s1, const char_type* __s2, std::size_t __n)
                                                       ^
/usr/include/c++/4.8/bits/char_traits.h:199:33: error: 'std::size_t' has not been declared
     assign(char_type* __s, std::size_t __n, char_type __a)
                                 ^
In file included from /usr/include/c++/4.8/ext/new_allocator.h:33:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/c++allocator.h:33,
                 from /usr/include/c++/4.8/bits/allocator.h:46,
                 from /usr/include/c++/4.8/string:41,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/new:91:31: error: declaration of 'operator new' as non-function
 void* operator new(std::size_t) _GLIBCXX_THROW (std::bad_alloc)
                               ^
/usr/include/c++/4.8/new:91:20: error: 'size_t' is not a member of 'std'
 void* operator new(std::size_t) _GLIBCXX_THROW (std::bad_alloc)
                    ^
/usr/include/c++/4.8/new:91:20: note: suggested alternative:
In file included from /usr/include/wchar.h:51:0,
                 from /usr/include/c++/4.8/cwchar:44,
                 from /usr/include/c++/4.8/bits/postypes.h:40,
                 from /usr/include/c++/4.8/iosfwd:40,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/lib/gcc/i686-linux-gnu/4.8/include/stddef.h:212:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^
In file included from /usr/include/c++/4.8/ext/new_allocator.h:33:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/c++allocator.h:33,
                 from /usr/include/c++/4.8/bits/allocator.h:46,
                 from /usr/include/c++/4.8/string:41,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/new:93:33: error: declaration of 'operator new []' as non-function
 void* operator new[](std::size_t) _GLIBCXX_THROW (std::bad_alloc)
                                 ^
/usr/include/c++/4.8/new:93:22: error: 'size_t' is not a member of 'std'
 void* operator new[](std::size_t) _GLIBCXX_THROW (std::bad_alloc)
                      ^
/usr/include/c++/4.8/new:93:22: note: suggested alternative:
In file included from /usr/include/wchar.h:51:0,
                 from /usr/include/c++/4.8/cwchar:44,
                 from /usr/include/c++/4.8/bits/postypes.h:40,
                 from /usr/include/c++/4.8/iosfwd:40,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/lib/gcc/i686-linux-gnu/4.8/include/stddef.h:212:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^
In file included from /usr/include/c++/4.8/ext/new_allocator.h:33:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/c++allocator.h:33,
                 from /usr/include/c++/4.8/bits/allocator.h:46,
                 from /usr/include/c++/4.8/string:41,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/new:99:25: error: declaration of 'operator new' as non-function
 void* operator new(std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
                         ^
/usr/include/c++/4.8/new:99:20: error: 'size_t' is not a member of 'std'
 void* operator new(std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
                    ^
/usr/include/c++/4.8/new:99:20: note: suggested alternative:
In file included from /usr/include/wchar.h:51:0,
                 from /usr/include/c++/4.8/cwchar:44,
                 from /usr/include/c++/4.8/bits/postypes.h:40,
                 from /usr/include/c++/4.8/iosfwd:40,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/lib/gcc/i686-linux-gnu/4.8/include/stddef.h:212:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^
In file included from /usr/include/c++/4.8/ext/new_allocator.h:33:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/c++allocator.h:33,
                 from /usr/include/c++/4.8/bits/allocator.h:46,
                 from /usr/include/c++/4.8/string:41,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/new:99:33: error: expected primary-expression before 'const'
 void* operator new(std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
                                 ^
/usr/include/c++/4.8/new:101:27: error: declaration of 'operator new []' as non-function
 void* operator new[](std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
                           ^
/usr/include/c++/4.8/new:101:22: error: 'size_t' is not a member of 'std'
 void* operator new[](std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
                      ^
/usr/include/c++/4.8/new:101:22: note: suggested alternative:
In file included from /usr/include/wchar.h:51:0,
                 from /usr/include/c++/4.8/cwchar:44,
                 from /usr/include/c++/4.8/bits/postypes.h:40,
                 from /usr/include/c++/4.8/iosfwd:40,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/lib/gcc/i686-linux-gnu/4.8/include/stddef.h:212:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^
In file included from /usr/include/c++/4.8/ext/new_allocator.h:33:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/c++allocator.h:33,
                 from /usr/include/c++/4.8/bits/allocator.h:46,
                 from /usr/include/c++/4.8/string:41,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/new:101:35: error: expected primary-expression before 'const'
 void* operator new[](std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
                                   ^
/usr/include/c++/4.8/new:109:32: error: declaration of 'operator new' as non-function
 inline void* operator new(std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT
                                ^
/usr/include/c++/4.8/new:109:27: error: 'size_t' is not a member of 'std'
 inline void* operator new(std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT
                           ^
/usr/include/c++/4.8/new:109:27: note: suggested alternative:
In file included from /usr/include/wchar.h:51:0,
                 from /usr/include/c++/4.8/cwchar:44,
                 from /usr/include/c++/4.8/bits/postypes.h:40,
                 from /usr/include/c++/4.8/iosfwd:40,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/lib/gcc/i686-linux-gnu/4.8/include/stddef.h:212:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^
In file included from /usr/include/c++/4.8/ext/new_allocator.h:33:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/c++allocator.h:33,
                 from /usr/include/c++/4.8/bits/allocator.h:46,
                 from /usr/include/c++/4.8/string:41,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/new:109:40: error: expected primary-expression before 'void'
 inline void* operator new(std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT
                                        ^
/usr/include/c++/4.8/new:111:34: error: declaration of 'operator new []' as non-function
 inline void* operator new[](std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT
                                  ^
/usr/include/c++/4.8/new:111:29: error: 'size_t' is not a member of 'std'
 inline void* operator new[](std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT
                             ^
/usr/include/c++/4.8/new:111:29: note: suggested alternative:
In file included from /usr/include/wchar.h:51:0,
                 from /usr/include/c++/4.8/cwchar:44,
                 from /usr/include/c++/4.8/bits/postypes.h:40,
                 from /usr/include/c++/4.8/iosfwd:40,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/lib/gcc/i686-linux-gnu/4.8/include/stddef.h:212:23: note:   'size_t'
 typedef __SIZE_TYPE__ size_t;
                       ^
In file included from /usr/include/c++/4.8/ext/new_allocator.h:33:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/c++allocator.h:33,
                 from /usr/include/c++/4.8/bits/allocator.h:46,
                 from /usr/include/c++/4.8/string:41,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/new:111:42: error: expected primary-expression before 'void'
 inline void* operator new[](std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT
                                          ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/c++allocator.h:33:0,
                 from /usr/include/c++/4.8/bits/allocator.h:46,
                 from /usr/include/c++/4.8/string:41,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/ext/new_allocator.h:44:14: error: 'std::size_t' has not been declared
   using std::size_t;
              ^
/usr/include/c++/4.8/ext/new_allocator.h:45:14: error: 'std::ptrdiff_t' has not been declared
   using std::ptrdiff_t;
              ^
/usr/include/c++/4.8/ext/new_allocator.h:62:15: error: 'ptrdiff_t' does not name a type
       typedef ptrdiff_t  difference_type;
               ^
In file included from /usr/include/c++/4.8/string:41:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/allocator.h:67:15: error: 'ptrdiff_t' does not name a type
       typedef ptrdiff_t   difference_type;
               ^
/usr/include/c++/4.8/bits/allocator.h:96:15: error: 'ptrdiff_t' does not name a type
       typedef ptrdiff_t  difference_type;
               ^
In file included from /usr/include/c++/4.8/string:44:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/ostream_insert.h:45:26: error: 'streamsize' has not been declared
       const _CharT* __s, streamsize __n)
                          ^
/usr/include/c++/4.8/bits/ostream_insert.h: In function 'void std::__ostream_write(std::basic_ostream<_CharT, _Traits>&, const _CharT*, int)':
/usr/include/c++/4.8/bits/ostream_insert.h:50:13: error: 'streamsize' does not name a type
       const streamsize __put = __out.rdbuf()->sputn(__s, __n);
             ^
/usr/include/c++/4.8/bits/ostream_insert.h:51:11: error: '__put' was not declared in this scope
       if (__put != __n)
           ^
/usr/include/c++/4.8/bits/ostream_insert.h: At global scope:
/usr/include/c++/4.8/bits/ostream_insert.h:57:59: error: 'streamsize' has not been declared
     __ostream_fill(basic_ostream<_CharT, _Traits>& __out, streamsize __n)
                                                           ^
/usr/include/c++/4.8/bits/ostream_insert.h:77:27: error: 'streamsize' has not been declared
        const _CharT* __s, streamsize __n)
                           ^
/usr/include/c++/4.8/bits/ostream_insert.h: In function 'std::basic_ostream<_CharT, _Traits>& std::__ostream_insert(std::basic_ostream<_CharT, _Traits>&, const _CharT*, int)':
/usr/include/c++/4.8/bits/ostream_insert.h:87:14: error: 'streamsize' does not name a type
        const streamsize __w = __out.width();
              ^
/usr/include/c++/4.8/bits/ostream_insert.h:88:12: error: '__w' was not declared in this scope
        if (__w > __n)
            ^
/usr/include/c++/4.8/bits/ostream_insert.h: At global scope:
/usr/include/c++/4.8/bits/ostream_insert.h:118:68: error: 'streamsize' has not been declared
   extern template ostream& __ostream_insert(ostream&, const char*, streamsize);
                                                                    ^
/usr/include/c++/4.8/bits/ostream_insert.h:122:11: error: 'streamsize' has not been declared
           streamsize);
           ^
In file included from /usr/include/c++/4.8/bits/basic_string.h:2815:0,
                 from /usr/include/c++/4.8/string:52,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/ext/string_conversions.h:55:51: error: 'std::size_t' has not been declared
     const char* __name, const _CharT* __str, std::size_t* __idx,
                                                   ^
/usr/include/c++/4.8/ext/string_conversions.h:83:48: error: 'std::size_t' has not been declared
     __to_xstring(int (*__convf) (_CharT*, std::size_t, const _CharT*,
                                                ^
/usr/include/c++/4.8/ext/string_conversions.h:84:31: error: 'std::size_t' has not been declared
      __builtin_va_list), std::size_t __n,
                               ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/basic_string.h: In instantiation of 'class std::basic_string<char>':
/usr/include/c++/4.8/bits/basic_string.h:2824:68:   required from here
/usr/include/c++/4.8/bits/basic_string.h:122:61: error: no type named 'difference_type' in 'std::basic_string<char>::_CharT_alloc_type {aka class std::allocator<char>}'
       typedef typename _CharT_alloc_type::difference_type   difference_type;
                                                             ^
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/basic_string.h: In function 'int std::stoi(const string&, size_t*, int)':
/usr/include/c++/4.8/bits/basic_string.h:2825:19: error: no matching function for call to '__stoa(long int (*)(const char*, char**, int)throw (), const char [5], const char*, size_t*&, int&)'
      __idx, __base); }
                   ^
/usr/include/c++/4.8/bits/basic_string.h:2825:19: note: candidate is:
In file included from /usr/include/c++/4.8/bits/basic_string.h:2815:0,
                 from /usr/include/c++/4.8/string:52,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/ext/string_conversions.h:54:5: note: template<class _TRet, class _Ret, class _CharT, class ... _Base> _Ret __gnu_cxx::__stoa(_TRet (*)(const _CharT*, _CharT**, _Base ...), const char*, const _CharT*, int*, _Base ...)
     __stoa(_TRet (*__convf) (const _CharT*, _CharT**, _Base...),
     ^
/usr/include/c++/4.8/ext/string_conversions.h:54:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/basic_string.h:2825:19: note:   cannot convert '__idx' (type 'size_t* {aka unsigned int*}') to type 'int*'
      __idx, __base); }
                   ^
/usr/include/c++/4.8/bits/basic_string.h: In function 'long int std::stol(const string&, size_t*, int)':
/usr/include/c++/4.8/bits/basic_string.h:2830:22: error: no matching function for call to '__stoa(long int (*)(const char*, char**, int)throw (), const char [5], const char*, size_t*&, int&)'
         __idx, __base); }
                      ^
/usr/include/c++/4.8/bits/basic_string.h:2830:22: note: candidate is:
In file included from /usr/include/c++/4.8/bits/basic_string.h:2815:0,
                 from /usr/include/c++/4.8/string:52,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/ext/string_conversions.h:54:5: note: template<class _TRet, class _Ret, class _CharT, class ... _Base> _Ret __gnu_cxx::__stoa(_TRet (*)(const _CharT*, _CharT**, _Base ...), const char*, const _CharT*, int*, _Base ...)
     __stoa(_TRet (*__convf) (const _CharT*, _CharT**, _Base...),
     ^
/usr/include/c++/4.8/ext/string_conversions.h:54:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/basic_string.h:2830:22: note:   cannot convert '__idx' (type 'size_t* {aka unsigned int*}') to type 'int*'
         __idx, __base); }
                      ^
/usr/include/c++/4.8/bits/basic_string.h: In function 'long unsigned int std::stoul(const string&, size_t*, int)':
/usr/include/c++/4.8/bits/basic_string.h:2835:22: error: no matching function for call to '__stoa(long unsigned int (*)(const char*, char**, int)throw (), const char [6], const char*, size_t*&, int&)'
         __idx, __base); }
                      ^
/usr/include/c++/4.8/bits/basic_string.h:2835:22: note: candidate is:
In file included from /usr/include/c++/4.8/bits/basic_string.h:2815:0,
                 from /usr/include/c++/4.8/string:52,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/ext/string_conversions.h:54:5: note: template<class _TRet, class _Ret, class _CharT, class ... _Base> _Ret __gnu_cxx::__stoa(_TRet (*)(const _CharT*, _CharT**, _Base ...), const char*, const _CharT*, int*, _Base ...)
     __stoa(_TRet (*__convf) (const _CharT*, _CharT**, _Base...),
     ^
/usr/include/c++/4.8/ext/string_conversions.h:54:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/basic_string.h:2835:22: note:   cannot convert '__idx' (type 'size_t* {aka unsigned int*}') to type 'int*'
         __idx, __base); }
                      ^
/usr/include/c++/4.8/bits/basic_string.h: In function 'long long int std::stoll(const string&, size_t*, int)':
/usr/include/c++/4.8/bits/basic_string.h:2840:22: error: no matching function for call to '__stoa(long long int (*)(const char*, char**, int)throw (), const char [6], const char*, size_t*&, int&)'
         __idx, __base); }
                      ^
/usr/include/c++/4.8/bits/basic_string.h:2840:22: note: candidate is:
In file included from /usr/include/c++/4.8/bits/basic_string.h:2815:0,
                 from /usr/include/c++/4.8/string:52,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/ext/string_conversions.h:54:5: note: template<class _TRet, class _Ret, class _CharT, class ... _Base> _Ret __gnu_cxx::__stoa(_TRet (*)(const _CharT*, _CharT**, _Base ...), const char*, const _CharT*, int*, _Base ...)
     __stoa(_TRet (*__convf) (const _CharT*, _CharT**, _Base...),
     ^
/usr/include/c++/4.8/ext/string_conversions.h:54:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/basic_string.h:2840:22: note:   cannot convert '__idx' (type 'size_t* {aka unsigned int*}') to type 'int*'
         __idx, __base); }
                      ^
/usr/include/c++/4.8/bits/basic_string.h: In function 'long long unsigned int std::stoull(const string&, size_t*, int)':
/usr/include/c++/4.8/bits/basic_string.h:2845:22: error: no matching function for call to '__stoa(long long unsigned int (*)(const char*, char**, int)throw (), const char [7], const char*, size_t*&, int&)'
         __idx, __base); }
                      ^
/usr/include/c++/4.8/bits/basic_string.h:2845:22: note: candidate is:
In file included from /usr/include/c++/4.8/bits/basic_string.h:2815:0,
                 from /usr/include/c++/4.8/string:52,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/ext/string_conversions.h:54:5: note: template<class _TRet, class _Ret, class _CharT, class ... _Base> _Ret __gnu_cxx::__stoa(_TRet (*)(const _CharT*, _CharT**, _Base ...), const char*, const _CharT*, int*, _Base ...)
     __stoa(_TRet (*__convf) (const _CharT*, _CharT**, _Base...),
     ^
/usr/include/c++/4.8/ext/string_conversions.h:54:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/basic_string.h:2845:22: note:   cannot convert '__idx' (type 'size_t* {aka unsigned int*}') to type 'int*'
         __idx, __base); }
                      ^
/usr/include/c++/4.8/bits/basic_string.h: In function 'float std::stof(const string&, size_t*)':
/usr/include/c++/4.8/bits/basic_string.h:2850:72: error: no matching function for call to '__stoa(float (*)(const char*, char**)throw (), const char [5], const char*, size_t*&)'
   { return __gnu_cxx::__stoa(&std::strtof, "stof", __str.c_str(), __idx); }
                                                                        ^
/usr/include/c++/4.8/bits/basic_string.h:2850:72: note: candidate is:
In file included from /usr/include/c++/4.8/bits/basic_string.h:2815:0,
                 from /usr/include/c++/4.8/string:52,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/ext/string_conversions.h:54:5: note: template<class _TRet, class _Ret, class _CharT, class ... _Base> _Ret __gnu_cxx::__stoa(_TRet (*)(const _CharT*, _CharT**, _Base ...), const char*, const _CharT*, int*, _Base ...)
     __stoa(_TRet (*__convf) (const _CharT*, _CharT**, _Base...),
     ^
/usr/include/c++/4.8/ext/string_conversions.h:54:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from dfs.cpp:2:
/usr/include/c++/4.8/bits/basic_string.h:2850:72: note:   cannot convert '__idx' (type 'size_t* {aka unsigned int*}') to type 'int*'
   { return __gnu_cxx::__stoa(&std::strtof, "stof", __str.c_str(), __idx); }
                                                                        ^
/usr/include/c++/4.8/bits/basic_string.h: In function 'double std::stod(const string&, size_t*)':
/usr/include/c++/4.8/bits/basic_string.h:2854:72: error: no matching function for call to '__stoa(double (*)(const char*, char**)throw (), const char [5], const char*, size_t*&)'
   { return __gnu_cxx::__stoa(&std::strtod, "stod", __str.c_str(), __idx); }
                                                                        ^
/usr/include/c++/4.8/bits/basic_string.h:2854:72: note: candidate is:
In file included from /usr/include/c++/4.8/bits/basic_string.h:2815:0,
                 from /usr/include/c++/4.8/string:52,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
               

Cum funcționează evaluarea?

www.pbinfo.ro permite evaluarea a două tipuri de probleme:

  • probleme la care rezolvarea presupune scrierea unui program complet
  • probleme la care rezolvarea presupune scrierea unei secvențe de program - câteva instrucțiuni, o listă de declarații, una sau mai multe funcții, etc.

Problema DFS face parte din prima categorie. Soluția propusă de tine va fi evaluată astfel:

  • Programul sursă este compilat folosind compilatorul corespunzător. Dacă în urma compilării se obțin erori sau avertismente, acestea sunt afișate în această pagină.
  • Dacă programul a fost compilat, executabilul obținut va fi rulat, furnizându-i-se unul sau mai multe seturi de date de intrare, în concordanță cu restricțiile specifice problemei. Pentru fiecare set de date se obține un anumit punctaj, în raport cu corectitudinea soluției tale.

Suma punctajelor acordate pe testele utilizate pentru verificare este 100. Astfel, soluția ta poate obține cel mult 100 de puncte, caz în care se poate considera corectă.