Compilare: main.cpp: In function 'int DFS(int, int)': main.cpp:27:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | for (int i = 0; i < web[nod].chd.size(); i++) { | ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:41:20: warning: comparison of integer expressions of different signedness: 'std::vector<stk_elem>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 41 | if (stk.size() == ret) { | ~~~~~~~~~~~^~~~~~ main.cpp: In function 'int main()': main.cpp:86:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 86 | for (int i = 0; i < comps.size(); i++) { | ~~^~~~~~~~~~~~~~ main.cpp:87:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 87 | for (int j = 0; j < comps[i].size(); j++) { | ~~^~~~~~~~~~~~~~~~~