Detalii evaluare: ~54686735

Detalii evaluare #54686735

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Rezumat problemă

`#1` sum

Să se scrie un program care citeşte din fişier două numere întregi şi determină suma lor.
Fișiere
Candale Silviu (silviu)
ușoară
Clasa 9 Elemente de baza ale limbajului Operatori și expresii
Rezolvă
Detalii

Problema	sum	Operații I/O	`sum.in`/`sum.out`
Limita timp	1 secunde	Limita memorie	Total: `64 MB` / Stivă `8 MB`
Id soluție	`#54686735`	Utilizator	Bostan George (bostan_george)
Fișier	sum.cpp	Dimensiune	312 B
Data încărcării	05 Decembrie 2024, 12:57	Scor / rezultat	Eroare de compilare
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Mesaj compilare

sum.cpp: In function 'int main()':
sum.cpp:17:10: error: no match for 'operator>>' (operand types are 'std::ostream {aka std::basic_ostream<char>}' and 'int')
     cout >> a+b;

          ^
sum.cpp:17:10: note: candidates are:
In file included from /usr/include/c++/4.8/string:53:0,
                 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/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/basic_string.tcc:996:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::basic_string<_CharT, _Traits, _Alloc>&)
     operator>>(basic_istream<_CharT, _Traits>& __in,
     ^
/usr/include/c++/4.8/bits/basic_string.tcc:996:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/istream.tcc:955:5: note: template<class _CharT2, class _Traits2> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT2*)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
     ^
/usr/include/c++/4.8/bits/istream.tcc:955:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/istream.tcc:923:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT&)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
     ^
/usr/include/c++/4.8/bits/istream.tcc:923:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/sstream:38:0,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from sum.cpp:1:
/usr/include/c++/4.8/istream:727:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char&)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
     ^
/usr/include/c++/4.8/istream:727:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/sstream:38:0,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from sum.cpp:1:
/usr/include/c++/4.8/istream:732:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char&)
     operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
     ^
/usr/include/c++/4.8/istream:732:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/sstream:38:0,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from sum.cpp:1:
/usr/include/c++/4.8/istream:774:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char*)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
     ^
/usr/include/c++/4.8/istream:774:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/sstream:38:0,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from sum.cpp:1:
/usr/include/c++/4.8/istream:779:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char*)
     operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
     ^
/usr/include/c++/4.8/istream:779:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/sstream:38:0,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from sum.cpp:1:
/usr/include/c++/4.8/istream:872:5: note: template<class _CharT, class _Traits, class _Tp> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&&, _Tp&)
     operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x)
     ^
/usr/include/c++/4.8/istream:872:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/ccomplex:38:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from sum.cpp:1:
/usr/include/c++/4.8/complex:491:5: note: template<class _Tp, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::complex<_Tp>&)
     operator>>(basic_istream<_CharT, _Traits>& __is, complex<_Tp>& __x)
     ^
/usr/include/c++/4.8/complex:491:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:505:5: note: template<class _UIntType1, unsigned int __w1, unsigned int __n1, unsigned int __m1, unsigned int __r1, _UIntType1 __a1, unsigned int __u1, _UIntType1 __d1, unsigned int __s1, _UIntType1 __b1, unsigned int __t1, _UIntType1 __c1, unsigned int __l1, _UIntType1 __f1, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::mersenne_twister_engine<_UIntType, __w, __n, __m, __r, __a, __u, __d, __s, __b, __t, __c, __l, __f>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:505:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:1050:5: note: template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::uniform_int_distribution<_IntType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:1050:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:1112:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::uniform_real_distribution<_IntType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:1112:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2299:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::cauchy_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:2299:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.h:3759:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::bernoulli_distribution&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.h:3759:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2077:5: note: template<class _RealType1, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::normal_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:2077:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:1256:5: note: template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::geometric_distribution<_IntType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:1256:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2621:5: note: template<class _RealType1, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::gamma_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:2621:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:1906:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::exponential_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:1906:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2698:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::weibull_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:2698:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2774:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::extreme_value_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:2774:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:178:5: note: template<class _UIntType, _UIntType __a, _UIntType __c, _UIntType __m, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::linear_congruential_engine<_UIntType, __a, __c, __m>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:178:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:657:5: note: template<class _UIntType, unsigned int __w, unsigned int __s, unsigned int __r, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::subtract_with_carry_engine<_UIntType, __w, __s, __r>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:657:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:725:5: note: template<class _RandomNumberEngine, unsigned int __p, unsigned int __r, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::discard_block_engine<_RandomNumberEngine, __p, __r>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:725:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:856:5: note: template<class _RandomNumberEngine, unsigned int __k, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::shuffle_order_engine<_RandomNumberEngine, __k>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:856:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:1372:5: note: template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::negative_binomial_distribution<_IntType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:1372:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:1577:5: note: template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::poisson_distribution<_IntType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:1577:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:1845:5: note: template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::binomial_distribution<_IntType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:1845:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2140:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::lognormal_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:2140:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2212:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::chi_squared_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:2212:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2377:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::fisher_f_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:2377:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2451:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::student_t_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:2451:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2913:5: note: template<class _IntType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::discrete_distribution<_IntType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:2913:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:3128:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::piecewise_constant_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:3128:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:3344:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::piecewise_linear_distribution<_RealType>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is,
     ^
/usr/include/c++/4.8/bits/random.tcc:3344:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:65:0,
                 from sum.cpp:1:
/usr/include/c++/4.8/bitset:1453:5: note: template<class _CharT, class _Traits, unsigned int _Nb> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::bitset<_Nb>&)
     operator>>(std::basic_istream<_CharT, _Traits>& __is, bitset<_Nb>& __x)
     ^
/usr/include/c++/4.8/bitset:1453:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:71:0,
                 from sum.cpp:1:
/usr/include/c++/4.8/iomanip:68:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Resetiosflags)
     operator>>(basic_istream<_CharT, _Traits>& __is, _Resetiosflags __f)
     ^
/usr/include/c++/4.8/iomanip:68:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:71:0,
                 from sum.cpp:1:
/usr/include/c++/4.8/iomanip:98:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Setiosflags)
     operator>>(basic_istream<_CharT, _Traits>& __is, _Setiosflags __f)
     ^
/usr/include/c++/4.8/iomanip:98:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:71:0,
                 from sum.cpp:1:
/usr/include/c++/4.8/iomanip:129:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Setbase)
     operator>>(basic_istream<_CharT, _Traits>& __is, _Setbase __f)
     ^
/usr/include/c++/4.8/iomanip:129:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:71:0,
                 from sum.cpp:1:
/usr/include/c++/4.8/iomanip:167:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Setfill<_CharT>)
     operator>>(basic_istream<_CharT, _Traits>& __is, _Setfill<_CharT> __f)
     ^
/usr/include/c++/4.8/iomanip:167:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:71:0,
                 from sum.cpp:1:
/usr/include/c++/4.8/iomanip:197:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Setprecision)
     operator>>(basic_istream<_CharT, _Traits>& __is, _Setprecision __f)
     ^
/usr/include/c++/4.8/iomanip:197:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:71:0,
                 from sum.cpp:1:
/usr/include/c++/4.8/iomanip:227:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Setw)
     operator>>(basic_istream<_CharT, _Traits>& __is, _Setw __f)
     ^
/usr/include/c++/4.8/iomanip:227:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:71:0,
                 from sum.cpp:1:
/usr/include/c++/4.8/iomanip:261:5: note: template<class _CharT, class _Traits, class _MoneyT> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::_Get_money<_MoneyT>)
     operator>>(basic_istream<_CharT, _Traits>& __is, _Get_money<_MoneyT> __f)
     ^
/usr/include/c++/4.8/iomanip:261:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:411:5: note: template<class _Dom1, class _Dom2> std::_Expr<std::_BinClos<std::__shift_right, std::_Expr, std::_Expr, _Dom1, _Dom2>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::_Expr<_Dom2, typename _Dom2::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(>>, __shift_right)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:411:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:411:5: note: template<class _Dom> std::_Expr<std::_BinClos<std::__shift_right, std::_Expr, std::_Constant, _Dom, typename _Dom::value_type>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const typename _Dom::value_type&)
     _DEFINE_EXPR_BINARY_OPERATOR(>>, __shift_right)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:411:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:411:5: note: template<class _Dom> std::_Expr<std::_BinClos<std::__shift_right, std::_Constant, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const typename _Dom::value_type&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(>>, __shift_right)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:411:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'int'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:411:5: note: template<class _Dom> std::_Expr<std::_BinClos<std::__shift_right, std::_Expr, std::_ValArray, _Dom, typename _Dom::value_type>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::valarray<typename _Dom::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(>>, __shift_right)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:411:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
     cout >> a+b;

               ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from sum.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:411:5: note: template<class _Dom> std::_Expr<std::_BinClos<std::__shift_right, std::_ValArray, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__shift_right, typename _Dom1::value_type>::result_type> std::operator>>(const std::valarray<typename _Dom::value_type>&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(>>, __shift_right)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:411:5: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'const std::valarray<typename _Dom::value_type>'
     cout >> a+b;

               ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94:0,
                 from sum.cpp:1:
/usr/include/c++/4.8/valarray:1176:1: note: template<class _Tp> std::_Expr<std::_BinClos<std::__shift_right, std::_ValArray, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__shift_right, _Tp>::result_type> std::operator>>(const std::valarray<_Tp>&, const std::valarray<_Tp>&)
 _DEFINE_BINARY_OPERATOR(>>, __shift_right)
 ^
/usr/include/c++/4.8/valarray:1176:1: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'const std::valarray<_Tp>'
     cout >> a+b;

               ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94:0,
                 from sum.cpp:1:
/usr/include/c++/4.8/valarray:1176:1: note: template<class _Tp> std::_Expr<std::_BinClos<std::__shift_right, std::_ValArray, std::_Constant, _Tp, _Tp>, typename std::__fun<std::__shift_right, _Tp>::result_type> std::operator>>(const std::valarray<_Tp>&, const _Tp&)
 _DEFINE_BINARY_OPERATOR(>>, __shift_right)
 ^
/usr/include/c++/4.8/valarray:1176:1: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'const std::valarray<_Tp>'
     cout >> a+b;

               ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94:0,
                 from sum.cpp:1:
/usr/include/c++/4.8/valarray:1176:1: note: template<class _Tp> std::_Expr<std::_BinClos<std::__shift_right, std::_Constant, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__shift_right, _Tp>::result_type> std::operator>>(const _Tp&, const std::valarray<_Tp>&)
 _DEFINE_BINARY_OPERATOR(>>, __shift_right)
 ^
/usr/include/c++/4.8/valarray:1176:1: note:   template argument deduction/substitution failed:
sum.cpp:17:15: note:   mismatched types 'const std::valarray<_Tp>' and 'int'
     cout >> a+b;

               ^
sum.cpp:17:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     cout >> a+b;

              ^
sum.cpp:8:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     freopen("sum.in", "r", stdin);

                                  ^
sum.cpp:9:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  freopen("sum.out", "w", stdout);

                                 ^
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 sum 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.