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	#64406231	Utilizator	Molodeț Jasmine (asi9434)
Fișier	kruskal.cpp	Dimensiune	1.10 KB
Data încărcării	05 Mai 2026, 13:52	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

kruskal.cpp: In function ‘int leaga(int, int)’:
kruskal.cpp:19:1: warning: no return statement in function returning non-void [-Wreturn-type]
   19 | }
      | ^
kruskal.cpp: In function ‘int main()’:
kruskal.cpp:56:5: error: reference to ‘cin’ is ambiguous
   56 |     cin >> n >> m;
      |     ^~~
In file included from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:146,
                 from kruskal.cpp:1:
/usr/include/c++/13/iostream:62:18: note: candidates are: ‘std::istream std::cin’
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
kruskal.cpp:5:10: note:                 ‘std::ifstream cin’
    5 | ifstream cin("kruskal.in");
      |          ^~~
kruskal.cpp:59:9: error: reference to ‘cin’ is ambiguous
   59 |         cin >> x >> y >> w;
      |         ^~~
/usr/include/c++/13/iostream:62:18: note: candidates are: ‘std::istream std::cin’
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
kruskal.cpp:5:10: note:                 ‘std::ifstream cin’
    5 | ifstream cin("kruskal.in");
      |          ^~~
kruskal.cpp:65:5: error: reference to ‘cout’ is ambiguous
   65 |     cout << rez << '\n';
      |     ^~~~
/usr/include/c++/13/iostream:63:18: note: candidates are: ‘std::ostream std::cout’
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
kruskal.cpp:6:10: note:                 ‘std::ofstream cout’
    6 | ofstream cout("kruskal.out");
      |          ^~~~
kruskal.cpp:67:9: error: reference to ‘cout’ is ambiguous
   67 |         cout << A[i].i << " " << A[i].j << '\n';
      |         ^~~~
/usr/include/c++/13/iostream:63:18: note: candidates are: ‘std::ostream std::cout’
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
kruskal.cpp:6:10: note:                 ‘std::ofstream cout’
    6 | ofstream cout("kruskal.out");
      |          ^~~~

Cum funcționează evaluarea?