Rezumat problemă

Kruskal

#592

Se dă un graf neorientat ponderat conex cu n vârfuri și m muchii – în care fiecare muchie are asociat un cost, număr natural strict pozitiv. Folosind algoritmul lui Kruskal, determinați un arbore parțial de cost minim.

Fișiere Candale Silviu (silviu) ușoară

Clasa 11 Teoria Grafurilor Grafuri cu costuri Algoritmul lui Kruskal

Rezolvă

Detalii

Problema	Kruskal	Operații I/O	kruskal.in/kruskal.out
Limita timp	0.1 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#63556422	Utilizator	Chifor David (DaV1d_776)
Fișier	kruskal.cpp	Dimensiune	1.57 KB
Data încărcării	09 Martie 2026, 13:19	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

kruskal.cpp:5:13: error: variable 'std::ifstream cin' has initializer but incomplete type
 ifstream cin("kruskal.in");

             ^
kruskal.cpp:6:14: error: variable 'std::ofstream cout' has initializer but incomplete type
 ofstream cout("kruskal.out");

              ^
kruskal.cpp: In function 'void citire()':
kruskal.cpp:20:5: error: reference to 'cin' is ambiguous
     cin>>n>>m;

     ^
kruskal.cpp:5:10: note: candidates are: <typeprefixerror>cin
 ifstream cin("kruskal.in");

          ^
In file included from kruskal.cpp:1:0:
/usr/include/c++/4.8/iostream:60:18: note:                 std::istream std::cin
   extern istream cin;  /// Linked to standard input
                  ^
kruskal.cpp:22:9: error: reference to 'cin' is ambiguous
         cin>>v[i].x>>v[i].y>>v[i].c;

         ^
kruskal.cpp:5:10: note: candidates are: <typeprefixerror>cin
 ifstream cin("kruskal.in");

          ^
In file included from kruskal.cpp:1:0:
/usr/include/c++/4.8/iostream:60:18: note:                 std::istream std::cin
   extern istream cin;  /// Linked to standard input
                  ^
kruskal.cpp: In function 'void afis()':
kruskal.cpp:79:5: error: reference to 'cout' is ambiguous
     cout<<cost;

     ^
kruskal.cpp:6:10: note: candidates are: <typeprefixerror>cout
 ofstream cout("kruskal.out");

          ^
In file included from kruskal.cpp:1:0:
/usr/include/c++/4.8/iostream:61:18: note:                 std::ostream std::cout
   extern ostream cout;  /// Linked to standard output
                  ^
kruskal.cpp:80:5: error: reference to 'cout' is ambiguous
     cout<<'\n';

     ^
kruskal.cpp:6:10: note: candidates are: <typeprefixerror>cout
 ofstream cout("kruskal.out");

          ^
In file included from kruskal.cpp:1:0:
/usr/include/c++/4.8/iostream:61:18: note:                 std::ostream std::cout
   extern ostream cout;  /// Linked to standard output
                  ^
kruskal.cpp:82:9: error: reference to 'cout' is ambiguous
         cout<<sol[i].x<<" "sol[i].y<<'\n';

         ^
kruskal.cpp:6:10: note: candidates are: <typeprefixerror>cout
 ofstream cout("kruskal.out");

          ^
In file included from kruskal.cpp:1:0:
/usr/include/c++/4.8/iostream:61:18: note:                 std::ostream std::cout
   extern ostream cout;  /// Linked to standard output
                  ^
kruskal.cpp:82:25: error: unable to find string literal operator 'operator"" sol'
         cout<<sol[i].x<<" "sol[i].y<<'\n';

                         ^

Cum funcționează evaluarea?