Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:15:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 15 | for ( int i = 0 ; i < adj[nod].size(); i ++ ) | ~~^~~~~~~~~~~~~~~~~ main.cpp:24:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for (int i = 0 ; i < adj[nod].size(); i ++ ) | ~~^~~~~~~~~~~~~~~~~