Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:23:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for(int i=0;i<v[nod].size();++i){ | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:51:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | for(int i=0;i<sol.size();++i) | ~^~~~~~~~~~~