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	#64467122	Utilizator	Rolea Alexandru (alex123469)
Fișier	kruskal.cpp	Dimensiune	1.37 KB
Data încărcării	08 Mai 2026, 13:25	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

kruskal.cpp:5:12: warning: character constant too long for its type
    5 | ifstream f('kruskal.in')
      |            ^~~~~~~~~~~~
kruskal.cpp:6:12: warning: character constant too long for its type
    6 | ofstream g('kruskal.out')
      |            ^~~~~~~~~~~~~
kruskal.cpp:5:12: error: invalid conversion from ‘int’ to ‘const char*’ [-fpermissive]
    5 | ifstream f('kruskal.in')
      |            ^~~~~~~~~~~~
      |            |
      |            int
In file included from kruskal.cpp:3:
/usr/include/c++/13/fstream:536:34: note:   initializing argument 1 of ‘std::basic_ifstream<_CharT, _Traits>::basic_ifstream(const char*, std::ios_base::openmode) [with _CharT = char; _Traits = std::char_traits<char>; std::ios_base::openmode = std::ios_base::openmode]’
  536 |       basic_ifstream(const char* __s, ios_base::openmode __mode = ios_base::in)
      |                      ~~~~~~~~~~~~^~~
kruskal.cpp:6:1: error: expected ‘,’ or ‘;’ before ‘ofstream’
    6 | ofstream g('kruskal.out')
      | ^~~~~~~~
kruskal.cpp:10:3: error: ‘v’ does not name a type
   10 | } v[101] , aux;
      |   ^
kruskal.cpp: In function ‘int main()’:
kruskal.cpp:16:12: error: ‘v’ was not declared in this scope
   16 |         f>>v[i].x>>v[i].y>>v[i].c;
      |            ^
kruskal.cpp:19:16: error: ‘v’ was not declared in this scope
   19 |             if(v[i].c>v[j].c)
      |                ^
kruskal.cpp:21:17: error: ‘aux’ was not declared in this scope
   21 |                 aux=v[i];
      |                 ^~~
kruskal.cpp:18:9: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
   18 |         for(j=i+1;j<=m;j++)
      |         ^~~
kruskal.cpp:25:13: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘for’
   25 |             for(i=1;i<=n;i++)
      |             ^~~
kruskal.cpp:31:19: error: ‘v’ was not declared in this scope
   31 |                 x=v[i].x;
      |                   ^
kruskal.cpp:36:21: error: ‘g’ was not declared in this scope
   36 |                     g<<x<<" "<<y<<endl;
      |                     ^
kruskal.cpp:58:13: error: ‘g’ was not declared in this scope
   58 |             g<<cost<<endl;
      |             ^

Cum funcționează evaluarea?