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	#64108700	Utilizator	gligor cristina (cristinagligor14)
Fișier	kruskal.cpp	Dimensiune	1.48 KB
Data încărcării	17 Aprilie 2026, 12:34	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

kruskal.cpp:6:12: warning: missing terminating " character
    6 | ifstream f("kruskal.in);
      |            ^
kruskal.cpp:6:12: error: missing terminating " character
    6 | ifstream f("kruskal.in);
      |            ^~~~~~~~~~~~~
kruskal.cpp:7:11: error: expected ‘,’ or ‘...’ before ‘(’ token
    7 | ofstream g("kruskal.out");
      |           ^
kruskal.cpp:7:26: error: expected ‘)’ before ‘;’ token
    7 | ofstream g("kruskal.out");
      |                          ^
      |                          )
kruskal.cpp:6:11: note: to match this ‘(’
    6 | ifstream f("kruskal.in);
      |           ^
kruskal.cpp: In function ‘void citire(int&, int&, muchie*)’:
kruskal.cpp:15:6: error: invalid operands of types ‘std::ifstream(std::ofstream)’ {aka ‘std::basic_ifstream<char>(std::basic_ofstream<char>)’} and ‘int’ to binary ‘operator>>’
   15 |     f>>n>>m;
      |     ~^~~
      |     |  |
      |     |  int
      |     std::ifstream(std::ofstream) {aka std::basic_ifstream<char>(std::basic_ofstream<char>)}
kruskal.cpp:18:10: error: invalid operands of types ‘std::ifstream(std::ofstream)’ {aka ‘std::basic_ifstream<char>(std::basic_ofstream<char>)’} and ‘int’ to binary ‘operator>>’
   18 |         f>>v[i].x>>v[i].y>>v[i].c;
      |         ~^~~~~~~~
      |         |       |
      |         |       int
      |         std::ifstream(std::ofstream) {aka std::basic_ifstream<char>(std::basic_ofstream<char>)}
kruskal.cpp: In function ‘void kruskal(int, int, muchie*)’:
kruskal.cpp:65:9: error: ‘g’ was not declared in this scope
   65 |         g<<ct<<'\n';
      |         ^
kruskal.cpp: In function ‘int main()’:
kruskal.cpp:78:7: error: request for member ‘close’ in ‘f’, which is of non-class type ‘std::ifstream(std::ofstream)’ {aka ‘std::basic_ifstream<char>(std::basic_ofstream<char>)’}
   78 |     f.close();
      |       ^~~~~
kruskal.cpp:79:5: error: ‘g’ was not declared in this scope
   79 |     g.close();
      |     ^

Cum funcționează evaluarea?