Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:36:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | for (int i = 0; i < adj[nod].size(); ++i) | ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:84:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 84 | for (j = 0; j < conex[i].size(); ++j) | ~~^~~~~~~~~~~~~~~~~