Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:29:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for ( int i = 0; i < g[node].size(); i++ ) { | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:81:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 81 | for ( int j = 0; j < bi[i].size(); j++ ) | ~~^~~~~~~~~~~~~~