Compilare: main.cpp: In function 'void Dfs(int, int)': main.cpp:23:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for( int i = 0; i < ad[node].size(); ++i ) { | ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:71:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 71 | for( int i = 0; i < ad[N].size(); ++i ) | ~~^~~~~~~~~~~~~~