Compilare: main.cpp: In function 'bool kruskal(int, int, int)': main.cpp:40:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | for(int i = 0; i < edge.size(); i++){ | ~~^~~~~~~~~~~~~ main.cpp: In function 'int cb(int, int)': main.cpp:60:12: warning: 'poz' may be used uninitialized [-Wmaybe-uninitialized] 60 | return poz; | ^~~ main.cpp:51:30: note: 'poz' was declared here 51 | int st = 1, dr = 1e4,med,poz; | ^~~ main.cpp: In function 'int main()': main.cpp:73:28: warning: 'poz' may be used uninitialized [-Wmaybe-uninitialized] 73 | fout << cb(u,v) << "\n"; | ^~~~ main.cpp:51:30: note: 'poz' was declared here 51 | int st = 1, dr = 1e4,med,poz; | ^~~