Compilare: main.cpp: In function 'void dfs(int, std::vector<int>&, std::vector<int>&, int&, std::vector<int>&, std::vector<int>&)': main.cpp:21:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for (int i = 0; i < vecini[nod].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:64:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 64 | for (int i = 0; i < sol.size(); i++) | ~~^~~~~~~~~~~~