Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:19:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | for (int i = 0; i < v[node].size(); i ++) { | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:44:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | for (int f = 0; f < fathers[j].size(); f ++) { | ~~^~~~~~~~~~~~~~~~~~~