Compilare: main.cpp: In function 'void dfs(int)': main.cpp:22:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for (int i = 0; i < adj[node].size(); ++i) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:68:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | for (j = 0; j < cmp[i].size() && exista == 0; ++j) | ~~^~~~~~~~~~~~~~~ main.cpp:93:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 93 | for (i = 0; i < rez.size(); ++i) | ~~^~~~~~~~~~~~ main.cpp:36:38: warning: unused variable 'copiek' [-Wunused-variable] 36 | int n, m, i, j, a, b, extra = 0, copiek, l; | ^~~~~~