Compilare: main.cpp: In function 'int main()': main.cpp:68:22: 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] 68 | for(int i = 0; i < edges.size(); i++){ | ~~^~~~~~~~~~~~~~ main.cpp:81:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 81 | for(int i = 0; i < sol.size(); i++){ | ~~^~~~~~~~~~~~ main.cpp: In function 'bool join(int, int)': main.cpp:46:1: warning: control reaches end of non-void function [-Wreturn-type] 46 | } | ^