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Detalii evaluare #42024906

Rezumat problemă

#1707 Retea

Se consideră o rețea formată din n servere, numerotate de la 1 la n. În rețea există m perechi de servere x y cunoscute între care există legături de comunicație directe. Între oricare două servere din rețea există legături, fie directe, fie prin intermediul altor servere.

Stabiliți pentru fiecare dintre cele n servere dacă eliminarea sa din rețea conduce la pierderea legăturii dintre cel puțin două servere rămase.

Rezolvă

Detalii

Problema Retea Operații I/O retea.in/retea.out
Limita timp 0.1 secunde Limita memorie Total: 64 MB / Stivă 16 MB
Id soluție #42024906 Utilizator Șindilă Marinela (ma17_ia2005R)
Fișier retea.cpp Dimensiune 1.05 KB
Data încărcării 12 Februarie 2023, 13:52 Scor / rezultat Eroare de compilare

Evaluare


Mesaj compilare

retea.cpp: In function 'void dfs(int, int)':
retea.cpp:14:20: error: no matching function for call to 'begin(int&)'
     for(int i : G[v])

                    ^
retea.cpp:14:20: note: candidates are:
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94:0,
                 from retea.cpp:1:
/usr/include/c++/4.8/valarray:1206:5: note: template<class _Tp> const _Tp* std::begin(const std::valarray<_Tp>&)
     begin(const valarray<_Tp>& __va)
     ^
/usr/include/c++/4.8/valarray:1206:5: note:   template argument deduction/substitution failed:
retea.cpp:14:20: note:   mismatched types 'const std::valarray<_Tp>' and 'int'
     for(int i : G[v])

                    ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94:0,
                 from retea.cpp:1:
/usr/include/c++/4.8/valarray:1196:5: note: template<class _Tp> _Tp* std::begin(std::valarray<_Tp>&)
     begin(valarray<_Tp>& __va)
     ^
/usr/include/c++/4.8/valarray:1196:5: note:   template argument deduction/substitution failed:
retea.cpp:14:20: note:   mismatched types 'std::valarray<_Tp>' and 'int'
     for(int i : G[v])

                    ^
In file included from /usr/include/c++/4.8/bits/basic_string.h:42:0,
                 from /usr/include/c++/4.8/string:52,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/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 retea.cpp:1:
/usr/include/c++/4.8/initializer_list:89:5: note: template<class _Tp> constexpr const _Tp* std::begin(std::initializer_list<_Tp>)
     begin(initializer_list<_Tp> __ils) noexcept
     ^
/usr/include/c++/4.8/initializer_list:89:5: note:   template argument deduction/substitution failed:
retea.cpp:14:20: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
     for(int i : G[v])

                    ^
In file included from /usr/include/c++/4.8/string:51:0,
                 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 retea.cpp:1:
/usr/include/c++/4.8/bits/range_access.h:87:5: note: template<class _Tp, unsigned int _Nm> _Tp* std::begin(_Tp (&)[_Nm])
     begin(_Tp (&__arr)[_Nm])
     ^
/usr/include/c++/4.8/bits/range_access.h:87:5: note:   template argument deduction/substitution failed:
retea.cpp:14:20: note:   mismatched types '_Tp [_Nm]' and 'int'
     for(int i : G[v])

                    ^
In file included from /usr/include/c++/4.8/string:51:0,
                 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 retea.cpp:1:
/usr/include/c++/4.8/bits/range_access.h:58:5: note: template<class _Container> decltype (__cont.begin()) std::begin(const _Container&)
     begin(const _Container& __cont) -> decltype(__cont.begin())
     ^
/usr/include/c++/4.8/bits/range_access.h:58:5: note:   template argument deduction/substitution failed:
/usr/include/c++/4.8/bits/range_access.h: In substitution of 'template<class _Container> decltype (__cont.begin()) std::begin(const _Container&) [with _Container = int]':
retea.cpp:14:20:   required from here
/usr/include/c++/4.8/bits/range_access.h:58:5: error: request for member 'begin' in '__cont', which is of non-class type 'const int'
/usr/include/c++/4.8/bits/range_access.h:48:5: note: template<class _Container> decltype (__cont.begin()) std::begin(_Container&)
     begin(_Container& __cont) -> decltype(__cont.begin())
     ^
/usr/include/c++/4.8/bits/range_access.h:48:5: note:   template argument deduction/substitution failed:
/usr/include/c++/4.8/bits/range_access.h: In substitution of 'template<class _Container> decltype (__cont.begin()) std::begin(_Container&) [with _Container = int]':
retea.cpp:14:20:   required from here
/usr/include/c++/4.8/bits/range_access.h:48:5: error: request for member 'begin' in '__cont', which is of non-class type 'int'
retea.cpp:14:20: error: no matching function for call to 'end(int&)'
     for(int i : G[v])

                    ^
retea.cpp:14:20: note: candidates are:
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94:0,
                 from retea.cpp:1:
/usr/include/c++/4.8/valarray:1226:5: note: template<class _Tp> const _Tp* std::end(const std::valarray<_Tp>&)
     end(const valarray<_Tp>& __va)
     ^
/usr/include/c++/4.8/valarray:1226:5: note:   template argument deduction/substitution failed:
retea.cpp:14:20: note:   mismatched types 'const std::valarray<_Tp>' and 'int'
     for(int i : G[v])

                    ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94:0,
                 from retea.cpp:1:
/usr/include/c++/4.8/valarray:1216:5: note: template<class _Tp> _Tp* std::end(std::valarray<_Tp>&)
     end(valarray<_Tp>& __va)
     ^
/usr/include/c++/4.8/valarray:1216:5: note:   template argument deduction/substitution failed:
retea.cpp:14:20: note:   mismatched types 'std::valarray<_Tp>' and 'int'
     for(int i : G[v])

                    ^
In file included from /usr/include/c++/4.8/bits/basic_string.h:42:0,
                 from /usr/include/c++/4.8/string:52,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/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 retea.cpp:1:
/usr/include/c++/4.8/initializer_list:99:5: note: template<class _Tp> constexpr const _Tp* std::end(std::initializer_list<_Tp>)
     end(initializer_list<_Tp> __ils) noexcept
     ^
/usr/include/c++/4.8/initializer_list:99:5: note:   template argument deduction/substitution failed:
retea.cpp:14:20: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
     for(int i : G[v])

                    ^
In file included from /usr/include/c++/4.8/string:51:0,
                 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 retea.cpp:1:
/usr/include/c++/4.8/bits/range_access.h:97:5: note: template<class _Tp, unsigned int _Nm> _Tp* std::end(_Tp (&)[_Nm])
     end(_Tp (&__arr)[_Nm])
     ^
/usr/include/c++/4.8/bits/range_access.h:97:5: note:   template argument deduction/substitution failed:
retea.cpp:14:20: note:   mismatched types '_Tp [_Nm]' and 'int'
     for(int i : G[v])

                    ^
In file included from /usr/include/c++/4.8/string:51:0,
                 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 retea.cpp:1:
/usr/include/c++/4.8/bits/range_access.h:78:5: note: template<class _Container> decltype (__cont.end()) std::end(const _Container&)
     end(const _Container& __cont) -> decltype(__cont.end())
     ^
/usr/include/c++/4.8/bits/range_access.h:78:5: note:   template argument deduction/substitution failed:
/usr/include/c++/4.8/bits/range_access.h: In substitution of 'template<class _Container> decltype (__cont.end()) std::end(const _Container&) [with _Container = int]':
retea.cpp:14:20:   required from here
/usr/include/c++/4.8/bits/range_access.h:78:5: error: request for member 'end' in '__cont', which is of non-class type 'const int'
/usr/include/c++/4.8/bits/range_access.h:68:5: note: template<class _Container> decltype (__cont.end()) std::end(_Container&)
     end(_Container& __cont) -> decltype(__cont.end())
     ^
/usr/include/c++/4.8/bits/range_access.h:68:5: note:   template argument deduction/substitution failed:
/usr/include/c++/4.8/bits/range_access.h: In substitution of 'template<class _Container> decltype (__cont.end()) std::end(_Container&) [with _Container = int]':
retea.cpp:14:20:   required from here
/usr/include/c++/4.8/bits/range_access.h:68:5: error: request for member 'end' in '__cont', which is of non-class type 'int'
retea.cpp: In function 'int main()':
retea.cpp:22:5: error: reference to 'cin' is ambiguous
     cin >> n >> m;

     ^
retea.cpp:5:10: note: candidates are: std::ifstream cin
 ifstream cin("retea.in");

          ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:74:0,
                 from retea.cpp:1:
/usr/include/c++/4.8/iostream:60:18: note:                 std::istream std::cin
   extern istream cin;  /// Linked to standard input
                  ^
retea.cpp:25:9: error: reference to 'cin' is ambiguous
         cin >> x >> y;

         ^
retea.cpp:5:10: note: candidates are: std::ifstream cin
 ifstream cin("retea.in");

          ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:74:0,
                 from retea.cpp:1:
/usr/include/c++/4.8/iostream:60:18: note:                 std::istream std::cin
   extern istream cin;  /// Linked to standard input
                  ^
retea.cpp:26:14: error: request for member 'push_back' in 'G[x]', which is of non-class type 'int'
         G[x].push_back(y);

              ^
retea.cpp:27:14: error: request for member 'push_back' in 'G[y]', which is of non-class type 'int'
         G[y].push_back(x);

              ^
retea.cpp:41:13: error: reference to 'cout' is ambiguous
             cout << ok << " ";

             ^
retea.cpp:6:10: note: candidates are: std::ofstream cout
 ofstream cout("retea.out");

          ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:74:0,
                 from retea.cpp:1:
/usr/include/c++/4.8/iostream:61:18: note:                 std::ostream std::cout
   extern ostream cout;  /// Linked to standard output
                  ^
retea.cpp:51:13: error: reference to 'cout' is ambiguous
             cout << ok << " ";

             ^
retea.cpp:6:10: note: candidates are: std::ofstream cout
 ofstream cout("retea.out");

          ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:74:0,
                 from retea.cpp:1:
/usr/include/c++/4.8/iostream:61:18: note:                 std::ostream std::cout
   extern ostream cout;  /// Linked to standard output
                  ^

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 Retea 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.