Compilare: main.cpp: In function 'void dfs(int, int, int)': main.cpp:13:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 13 | for (int i = 0; i < adj[act].size(); i++) { | ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:57:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | for (int i = 0; i < rez.size(); i++) { | ~~^~~~~~~~~~~~ main.cpp:60:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | for (int j = 1; j < rez[i].size(); j++) { | ~~^~~~~~~~~~~~~~~