Detalii evaluare #54909861

Rezumat problemă

#2919 2Groups

Se dă numărul natural n. Să se împartă numerele naturale de la 1 la n în două grupuri astfel încât diferența absolută dintre sumele numerelor din cele două grupuri să fie minimă.

Detalii

Problema 2Groups Operații I/O tastatură/ecran
Limita timp 0.1 secunde Limita memorie Total: 64 MB / Stivă 8 MB
Id soluție #54909861 Utilizator Alexandru Mamaischi (4l3xandru)
Fișier groups.cpp Dimensiune 2.67 KB
Data încărcării 11 Decembrie 2024, 22:31 Scor / rezultat Eroare de compilare

Evaluare


Mesaj compilare

groups.cpp:2:1: error: stray '\304' in program
 Problema de 80 de puncte cu mesajul "Sumele nu sunt identice" este cauzată de următoarele greșeli de logică și afișare:

 ^
groups.cpp:2:1: error: stray '\203' in program
groups.cpp:2:1: error: stray '\304' in program
groups.cpp:2:1: error: stray '\203' in program
groups.cpp:2:1: error: stray '\310' in program
groups.cpp:2:1: error: stray '\231' in program
groups.cpp:2:1: error: stray '\304' in program
groups.cpp:2:1: error: stray '\203' in program
groups.cpp:2:1: error: stray '\310' in program
groups.cpp:2:1: error: stray '\231' in program
groups.cpp:2:1: error: stray '\310' in program
groups.cpp:2:1: error: stray '\231' in program
groups.cpp:4:1: error: stray '\357' in program
 1️⃣ Greșeală: Condiția greșită pentru afișarea numerelor

 ^
groups.cpp:4:1: error: stray '\270' in program
groups.cpp:4:1: error: stray '\217' in program
groups.cpp:4:1: error: stray '\342' in program
groups.cpp:4:1: error: stray '\203' in program
groups.cpp:4:1: error: stray '\243' in program
groups.cpp:4:1: error: stray '\310' in program
groups.cpp:4:1: error: stray '\231' in program
groups.cpp:4:1: error: stray '\304' in program
groups.cpp:4:1: error: stray '\203' in program
groups.cpp:4:1: error: stray '\310' in program
groups.cpp:4:1: error: stray '\233' in program
groups.cpp:4:1: error: stray '\310' in program
groups.cpp:4:1: error: stray '\231' in program
groups.cpp:4:1: error: stray '\304' in program
groups.cpp:4:1: error: stray '\203' in program
groups.cpp:4:1: error: stray '\310' in program
groups.cpp:4:1: error: stray '\231' in program
groups.cpp:5:1: error: stray '\303' in program
 În partea de afișare, ai folosit acest cod:

 ^
groups.cpp:5:1: error: stray '\216' in program
groups.cpp:5:1: error: stray '\310' in program
groups.cpp:5:1: error: stray '\231' in program
groups.cpp:17:1: error: stray '\303' in program
 La prima vedere, ai încercat să eviți afișarea numerelor duplicate, dar nu e nevoie de această logică!. De ce?

 ^
groups.cpp:17:1: error: stray '\256' in program
groups.cpp:17:1: error: stray '\304' in program
groups.cpp:17:1: error: stray '\203' in program
groups.cpp:17:1: error: stray '\310' in program
groups.cpp:17:1: error: stray '\233' in program
groups.cpp:17:1: error: stray '\310' in program
groups.cpp:17:1: error: stray '\231' in program
groups.cpp:17:1: error: stray '\304' in program
groups.cpp:17:1: error: stray '\203' in program
groups.cpp:17:1: error: stray '\304' in program
groups.cpp:17:1: error: stray '\203' in program
groups.cpp:19:1: error: stray '\304' in program
 Variabila cx memorează ultima valoare afișată, dar dacă vectorul x conține două numere egale (ceea ce nu se întâmplă), atunci această condiție va ignora acele valori.

 ^
groups.cpp:19:1: error: stray '\203' in program
groups.cpp:19:1: error: stray '\310' in program
groups.cpp:19:1: error: stray '\231' in program
groups.cpp:19:1: error: stray '\304' in program
groups.cpp:19:1: error: stray '\203' in program
groups.cpp:19:1: error: stray '\304' in program
groups.cpp:19:1: error: stray '\203' in program
groups.cpp:19:1: error: stray '\310' in program
groups.cpp:19:1: error: stray '\233' in program
groups.cpp:19:1: error: stray '\304' in program
groups.cpp:19:1: error: stray '\203' in program
groups.cpp:19:1: error: stray '\303' in program
groups.cpp:19:1: error: stray '\256' in program
groups.cpp:19:1: error: stray '\303' in program
groups.cpp:19:1: error: stray '\242' in program
groups.cpp:19:1: error: stray '\304' in program
groups.cpp:19:1: error: stray '\203' in program
groups.cpp:19:1: error: stray '\304' in program
groups.cpp:19:1: error: stray '\203' in program
groups.cpp:19:1: error: stray '\310' in program
groups.cpp:19:1: error: stray '\233' in program
groups.cpp:20:1: error: stray '\304' in program
 De fapt, nu există duplicate, dar logica asta "păcălește" programul să nu afișeze toate valorile.

 ^
groups.cpp:20:1: error: stray '\203' in program
groups.cpp:20:1: error: stray '\304' in program
groups.cpp:20:1: error: stray '\203' in program
groups.cpp:20:1: error: stray '\310' in program
groups.cpp:20:1: error: stray '\231' in program
groups.cpp:21:1: error: stray '\304' in program
 Asta explică de ce lipsește un număr din grup, iar diferența dintre sume nu este zero.

 ^
groups.cpp:21:1: error: stray '\203' in program
groups.cpp:21:1: error: stray '\310' in program
groups.cpp:21:1: error: stray '\231' in program
groups.cpp:21:1: error: stray '\304' in program
groups.cpp:21:1: error: stray '\203' in program
groups.cpp:21:1: error: stray '\310' in program
groups.cpp:21:1: error: stray '\233' in program
groups.cpp:22:1: error: stray '\357' in program
 2️⃣ Greșeală: Folosești x[i] în loc de y[i] în afișarea grupului 

 ^
groups.cpp:22:1: error: stray '\270' in program
groups.cpp:22:1: error: stray '\217' in program
groups.cpp:22:1: error: stray '\342' in program
groups.cpp:22:1: error: stray '\203' in program
groups.cpp:22:1: error: stray '\243' in program
groups.cpp:22:1: error: stray '\310' in program
groups.cpp:22:1: error: stray '\231' in program
groups.cpp:22:1: error: stray '\304' in program
groups.cpp:22:1: error: stray '\203' in program
groups.cpp:22:1: error: stray '\310' in program
groups.cpp:22:1: error: stray '\231' in program
groups.cpp:22:1: error: stray '\303' in program
groups.cpp:22:1: error: stray '\256' in program
groups.cpp:22:1: error: stray '\303' in program
groups.cpp:22:1: error: stray '\256' in program
groups.cpp:22:1: error: stray '\310' in program
groups.cpp:22:1: error: stray '\231' in program
groups.cpp:23:1: error: stray '\360' in program
 𝑦

 ^
groups.cpp:23:1: error: stray '\235' in program
groups.cpp:23:1: error: stray '\221' in program
groups.cpp:23:1: error: stray '\246' in program
groups.cpp:25:1: error: stray '\304' in program
 Codul tău:

 ^
groups.cpp:25:1: error: stray '\203' in program
groups.cpp:37:1: error: stray '\310' in program
 Greșeala majoră: Ai folosit x[i] în loc de y[i], ceea ce înseamnă că ai verificat dacă un element din vectorul 

 ^
groups.cpp:37:1: error: stray '\231' in program
groups.cpp:37:1: error: stray '\304' in program
groups.cpp:37:1: error: stray '\203' in program
groups.cpp:37:1: error: stray '\303' in program
groups.cpp:37:1: error: stray '\256' in program
groups.cpp:37:1: error: stray '\303' in program
groups.cpp:37:1: error: stray '\256' in program
groups.cpp:37:1: error: stray '\304' in program
groups.cpp:37:1: error: stray '\203' in program
groups.cpp:37:1: error: stray '\304' in program
groups.cpp:37:1: error: stray '\203' in program
groups.cpp:37:1: error: stray '\304' in program
groups.cpp:37:1: error: stray '\203' in program
groups.cpp:38:1: error: stray '\360' in program
 𝑥

 ^
groups.cpp:38:1: error: stray '\235' in program
groups.cpp:38:1: error: stray '\221' in program
groups.cpp:38:1: error: stray '\245' in program
groups.cpp:39:1: error: stray '\310' in program
 x a fost deja afișat, nu unul din 

 ^
groups.cpp:39:1: error: stray '\231' in program
groups.cpp:40:1: error: stray '\360' in program
 𝑦

 ^
groups.cpp:40:1: error: stray '\235' in program
groups.cpp:40:1: error: stray '\221' in program
groups.cpp:40:1: error: stray '\246' in program
groups.cpp:42:1: error: stray '\304' in program
 Corect: Ar trebui să folosești y[i] în loc de x[i] în această buclă.

 ^
groups.cpp:42:1: error: stray '\203' in program
groups.cpp:42:1: error: stray '\310' in program
groups.cpp:42:1: error: stray '\231' in program
groups.cpp:42:1: error: stray '\303' in program
groups.cpp:42:1: error: stray '\256' in program
groups.cpp:42:1: error: stray '\303' in program
groups.cpp:42:1: error: stray '\256' in program
groups.cpp:42:1: error: stray '\304' in program
groups.cpp:42:1: error: stray '\203' in program
groups.cpp:42:1: error: stray '\304' in program
groups.cpp:42:1: error: stray '\203' in program
groups.cpp:44:1: error: stray '\357' in program
 3️⃣ Greșeală: Calculul corect al sumei

 ^
groups.cpp:44:1: error: stray '\270' in program
groups.cpp:44:1: error: stray '\217' in program
groups.cpp:44:1: error: stray '\342' in program
groups.cpp:44:1: error: stray '\203' in program
groups.cpp:44:1: error: stray '\243' in program
groups.cpp:44:1: error: stray '\310' in program
groups.cpp:44:1: error: stray '\231' in program
groups.cpp:44:1: error: stray '\304' in program
groups.cpp:44:1: error: stray '\203' in program
groups.cpp:45:1: error: stray '\303' in program
 În enunț, se cere ca diferența dintre sumele celor două grupuri să fie minimă.

 ^
groups.cpp:45:1: error: stray '\216' in program
groups.cpp:45:1: error: stray '\310' in program
groups.cpp:45:1: error: stray '\233' in program
groups.cpp:45:1: error: stray '\310' in program
groups.cpp:45:1: error: stray '\233' in program
groups.cpp:45:1: error: stray '\304' in program
groups.cpp:45:1: error: stray '\203' in program
groups.cpp:45:1: error: stray '\304' in program
groups.cpp:45:1: error: stray '\203' in program
groups.cpp:45:1: error: stray '\304' in program
groups.cpp:45:1: error: stray '\203' in program
groups.cpp:46:1: error: stray '\310' in program
 Diferența s-ar putea să nu fie chiar zero întotdeauna, dar trebuie să fie minimă.

 ^
groups.cpp:46:1: error: stray '\233' in program
groups.cpp:46:1: error: stray '\304' in program
groups.cpp:46:1: error: stray '\203' in program
groups.cpp:46:1: error: stray '\303' in program
groups.cpp:46:1: error: stray '\256' in program
groups.cpp:46:1: error: stray '\304' in program
groups.cpp:46:1: error: stray '\203' in program
groups.cpp:46:1: error: stray '\304' in program
groups.cpp:46:1: error: stray '\203' in program
groups.cpp:47:1: error: stray '\304' in program
 Dar această parte pare să fie corectă în logica de împărțire.

 ^
groups.cpp:47:1: error: stray '\203' in program
groups.cpp:47:1: error: stray '\304' in program
groups.cpp:47:1: error: stray '\203' in program
groups.cpp:47:1: error: stray '\304' in program
groups.cpp:47:1: error: stray '\203' in program
groups.cpp:47:1: error: stray '\303' in program
groups.cpp:47:1: error: stray '\256' in program
groups.cpp:47:1: error: stray '\303' in program
groups.cpp:47:1: error: stray '\256' in program
groups.cpp:47:1: error: stray '\304' in program
groups.cpp:47:1: error: stray '\203' in program
groups.cpp:47:1: error: stray '\310' in program
groups.cpp:47:1: error: stray '\233' in program
groups.cpp:49:1: error: stray '\360' in program
 🔧 Cum rezolvăm problema?

 ^
groups.cpp:49:1: error: stray '\237' in program
groups.cpp:49:1: error: stray '\224' in program
groups.cpp:49:1: error: stray '\247' in program
groups.cpp:49:1: error: stray '\304' in program
groups.cpp:49:1: error: stray '\203' in program
groups.cpp:50:1: error: stray '\304' in program
 Modificări necesare

 ^
groups.cpp:50:1: error: stray '\203' in program
groups.cpp:51:1: error: stray '\304' in program
 Eliminăm verificarea duplicatelor (if(cx != x[i])) pentru că nu este necesară.

 ^
groups.cpp:51:1: error: stray '\203' in program
groups.cpp:51:1: error: stray '\304' in program
groups.cpp:51:1: error: stray '\203' in program
groups.cpp:51:1: error: stray '\304' in program
groups.cpp:51:1: error: stray '\203' in program
groups.cpp:52:1: error: stray '\310' in program
 Afișăm toate numerele din fiecare grup, fără niciun filtru.

 ^
groups.cpp:52:1: error: stray '\231' in program
groups.cpp:52:1: error: stray '\304' in program
groups.cpp:52:1: error: stray '\203' in program
groups.cpp:52:1: error: stray '\304' in program
groups.cpp:52:1: error: stray '\203' in program
groups.cpp:52:1: error: stray '\304' in program
groups.cpp:52:1: error: stray '\203' in program
groups.cpp:53:1: error: stray '\304' in program
 Corectăm bucla de afișare a lui 

 ^
groups.cpp:53:1: error: stray '\203' in program
groups.cpp:53:1: error: stray '\310' in program
groups.cpp:53:1: error: stray '\231' in program
groups.cpp:54:1: error: stray '\360' in program
 𝑦

 ^
groups.cpp:54:1: error: stray '\235' in program
groups.cpp:54:1: error: stray '\221' in program
groups.cpp:54:1: error: stray '\246' in program
groups.cpp:55:1: error: stray '\303' in program
 y astfel încât să fie y[i] în loc de x[i].

 ^
groups.cpp:55:1: error: stray '\256' in program
groups.cpp:55:1: error: stray '\303' in program
groups.cpp:55:1: error: stray '\242' in program
groups.cpp:55:1: error: stray '\304' in program
groups.cpp:55:1: error: stray '\203' in program
groups.cpp:55:1: error: stray '\303' in program
groups.cpp:55:1: error: stray '\256' in program
groups.cpp:56:1: error: stray '\360' in program
 🛠️ Cod corectat (100 de puncte)

 ^
groups.cpp:56:1: error: stray '\237' in program
groups.cpp:56:1: error: stray '\233' in program
groups.cpp:56:1: error: stray '\240' in program
groups.cpp:56:1: error: stray '\357' in program
groups.cpp:56:1: error: stray '\270' in program
groups.cpp:56:1: error: stray '\217' in program
groups.cpp:2:1: error: 'Problema' does not name a type
 Problema de 80 de puncte cu mesajul "Sumele nu sunt identice" este cauzată de următoarele greșeli de logică și afișare:

 ^
groups.cpp:9:10: error: 'i' does not name a type
 for(i=1; i<=ct1; i++)

          ^
groups.cpp:9:18: error: 'i' does not name a type
 for(i=1; i<=ct1; i++)

                  ^
groups.cpp:17:1: error: 'La' does not name a type
 La prima vedere, ai încercat să eviți afișarea numerelor duplicate, dar nu e nevoie de această logică!. De ce?

 ^
groups.cpp:29:10: error: 'i' does not name a type
 for(i=1; i<=ct2; i++)

          ^
groups.cpp:29:18: error: 'i' does not name a type
 for(i=1; i<=ct2; i++)

                  ^
groups.cpp:37:1: error: 'Gre' does not name a type
 Greșeala majoră: Ai folosit x[i] în loc de y[i], ceea ce înseamnă că ai verificat dacă un element din vectorul 

 ^
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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from groups.cpp:59:
/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 includ

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 2Groups 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.