Compilare: main.cpp: In function 'std::vector<int> solve(int, const std::vector<std::vector<int> >&)': main.cpp:16:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for(int j = 0;j < adj[i].size();++j) | ~~^~~~~~~~~~~~~~~ main.cpp:34:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for(int i = 0;i < adj[nod].size();++i) | ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:87:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 87 | for(int i = 0;i < ans.size();++i) | ~~^~~~~~~~~~~~ main.cpp:91:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 91 | for(int i = 0;i < sol.size();++i) | ~~^~~~~~~~~~~~