Compilare: main.cpp: In function 'void bfs(int, int*)': main.cpp:21:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for( int i = 0 ; i < v[nod].size(); i++ ){ | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:51:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | for( int i = 0 ; i < ans.size() ; i++ ) | ~~^~~~~~~~~~~~