Compilare: main.cpp: In function 'void dfs(long long int)': main.cpp:12:24: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 12 | for(long long i=0;i<L[nod].size();i++){ | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:37:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | for(j=0;j<L[nod].size();j++){ | ~^~~~~~~~~~~~~~