Compilare: main.cpp: In function 'int main()': main.cpp:67:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::tuple<int, int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 67 | for ( i = 0; i < edges.size(); i ++ ) { | ~~^~~~~~~~~~~~~~ main.cpp:66:20: warning: 'ans' may be used uninitialized [-Wmaybe-uninitialized] 66 | fout << ans << "\n" << n - 1 << "\n"; | ^~~~ main.cpp:35:36: note: 'ans' was declared here 35 | int n, m, cost, u, v, i, comp, ans; | ^~~