Compilare: main.cpp: In function 'void Kruskal()': main.cpp:53:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | for(int i = 0; i < a.size(); i ++) | ~~^~~~~~~~~~ main.cpp:55:22: warning: unused variable 'r1' [-Wunused-variable] 55 | int x, y, c, r1, r2; | ^~ main.cpp:55:26: warning: unused variable 'r2' [-Wunused-variable] 55 | int x, y, c, r1, r2; | ^~ main.cpp: In function 'int main()': main.cpp:84:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 84 | for(int i = 0; i < sol.size(); i ++) | ~~^~~~~~~~~~~~