Rezumat problemă

LantPQ

#4956

Se dă un graf neorientat cu n vârfuri și două numere naturale p și q. Să se determine toate lanțurile elementare formate din cel puțin p muchii și cel mult q muchii, adică au lungimea în intervalul [p,q].

Fișiere Muresan Ciprian (mcip1977) medie

Clasa 11 Teoria Grafurilor Probleme elementare cu grafuri neorientate

Rezolvă

Detalii

Problema	LantPQ	Operații I/O	lantpq.in/lantpq.out
Limita timp	0.2 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#63820193	Utilizator	Baciu Alex (baciu_alexx)
Fișier	lantpq.cpp	Dimensiune	878 B
Data încărcării	20 Martie 2026, 09:05	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

lantpq.cpp:4:13: error: variable 'std::ifstream cin' has initializer but incomplete type
 ifstream cin("lantpq.in");

             ^
lantpq.cpp:5:14: error: variable 'std::ofstream cout' has initializer but incomplete type
 ofstream cout("lantpq.out");

              ^
lantpq.cpp: In function 'void citire()':
lantpq.cpp:9:5: error: reference to 'cin' is ambiguous
     cin>>n>>m;

     ^
lantpq.cpp:4:10: note: candidates are: <typeprefixerror>cin
 ifstream cin("lantpq.in");

          ^
In file included from lantpq.cpp:1:0:
/usr/include/c++/4.8/iostream:60:18: note:                 std::istream std::cin
   extern istream cin;  /// Linked to standard input
                  ^
lantpq.cpp:13:9: error: reference to 'cin' is ambiguous
         cin>>x>>y;

         ^
lantpq.cpp:4:10: note: candidates are: <typeprefixerror>cin
 ifstream cin("lantpq.in");

          ^
In file included from lantpq.cpp:1:0:
/usr/include/c++/4.8/iostream:60:18: note:                 std::istream std::cin
   extern istream cin;  /// Linked to standard input
                  ^
lantpq.cpp:16:5: error: reference to 'cin' is ambiguous
     cin>>p>>q;

     ^
lantpq.cpp:4:10: note: candidates are: <typeprefixerror>cin
 ifstream cin("lantpq.in");

          ^
In file included from lantpq.cpp:1:0:
/usr/include/c++/4.8/iostream:60:18: note:                 std::istream std::cin
   extern istream cin;  /// Linked to standard input
                  ^
lantpq.cpp: In function 'void backtr(int)':
lantpq.cpp:30:21: error: reference to 'cout' is ambiguous
                     cout<<s[k]<<" ";

                     ^
lantpq.cpp:5:10: note: candidates are: <typeprefixerror>cout
 ofstream cout("lantpq.out");

          ^
In file included from lantpq.cpp:1:0:
/usr/include/c++/4.8/iostream:61:18: note:                 std::ostream std::cout
   extern ostream cout;  /// Linked to standard output
                  ^
lantpq.cpp:31:17: error: reference to 'cout' is ambiguous
                 cout<<'\n';

                 ^
lantpq.cpp:5:10: note: candidates are: <typeprefixerror>cout
 ofstream cout("lantpq.out");

          ^
In file included from lantpq.cpp:1:0:
/usr/include/c++/4.8/iostream:61:18: note:                 std::ostream std::cout
   extern ostream cout;  /// Linked to standard output
                  ^
lantpq.cpp: In function 'int main()':
lantpq.cpp:43:20: error: 'backtracking' was not declared in this scope
     backtracking (1);

                    ^
lantpq.cpp:45:9: error: reference to 'cout' is ambiguous
         cout<<"NU EXISTA";

         ^
lantpq.cpp:5:10: note: candidates are: <typeprefixerror>cout
 ofstream cout("lantpq.out");

          ^
In file included from lantpq.cpp:1:0:
/usr/include/c++/4.8/iostream:61:18: note:                 std::ostream std::cout
   extern ostream cout;  /// Linked to standard output
                  ^

Cum funcționează evaluarea?