Compilare: main.cpp: In function 'void dfs(int, std::vector<std::vector<int> >&, std::vector<int>&, std::vector<int>&)': main.cpp:16:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for (int i = 0; i < e[son].size(); ++i) { | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:68:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::queue<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | while (vtx > q.size()) { | ~~~~^~~~~~~~~~