Rezumat problemă

GradePQ

#4960

Se dă un graf neorientat cu n noduri și două numere naturale p q. Să se determine nodurile din graf care au gradul între p și q.

Fișiere Candale Silviu (silviu) ușoară

Clasa 11 Teoria Grafurilor Probleme elementare cu grafuri neorientate

Rezolvă

Detalii

Problema	GradePQ	Operații I/O	gradepq.in/gradepq.out
Limita timp	0.1 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#64387526	Utilizator	Ciorâțanu Elena (Elena_Cioratanu)
Fișier	gradepq.cpp	Dimensiune	508 B
Data încărcării	04 Mai 2026, 18:35	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

gradepq.cpp:3:13: error: variable ‘std::ifstream cin’ has initializer but incomplete type
    3 | ifstream cin("gradepq.in");
      |             ^
gradepq.cpp:4:14: error: variable ‘std::ofstream cout’ has initializer but incomplete type
    4 | ofstream cout("gradepq.out");
      |              ^
gradepq.cpp: In function ‘int main()’:
gradepq.cpp:8:5: error: reference to ‘cin’ is ambiguous
    8 |     cin>>n>>p>>q;
      |     ^~~
In file included from gradepq.cpp:1:
/usr/include/c++/13/iostream:62:18: note: candidates are: ‘std::istream std::cin’
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
gradepq.cpp:3:10: note:                 ‘<typeprefixerror>cin’
    3 | ifstream cin("gradepq.in");
      |          ^~~
gradepq.cpp:9:11: error: reference to ‘cin’ is ambiguous
    9 |     while(cin>>i>>j)
      |           ^~~
/usr/include/c++/13/iostream:62:18: note: candidates are: ‘std::istream std::cin’
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
gradepq.cpp:3:10: note:                 ‘<typeprefixerror>cin’
    3 | ifstream cin("gradepq.in");
      |          ^~~
gradepq.cpp:19:5: error: reference to ‘cout’ is ambiguous
   19 |     cout<<k<<endl;
      |     ^~~~
/usr/include/c++/13/iostream:63:18: note: candidates are: ‘std::ostream std::cout’
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
gradepq.cpp:4:10: note:                 ‘<typeprefixerror>cout’
    4 | ofstream cout("gradepq.out");
      |          ^~~~
gradepq.cpp:22:13: error: reference to ‘cout’ is ambiguous
   22 |             cout<<i<<" ";
      |             ^~~~
/usr/include/c++/13/iostream:63:18: note: candidates are: ‘std::ostream std::cout’
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
gradepq.cpp:4:10: note:                 ‘<typeprefixerror>cout’
    4 | ofstream cout("gradepq.out");
      |          ^~~~

Cum funcționează evaluarea?