Compilare: main.cpp: In function 'void dfs(int)': main.cpp:16:18: 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<L[nod].size();j++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:52:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 52 | for(i=0;i<sol.size();i++) | ~^~~~~~~~~~~