Compilare: main.cpp: In function 'void solve()': main.cpp:29:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for (int i=0;i<g[nod].size ();++i){ | ~^~~~~~~~~~~~~~~ main.cpp:38:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for (int j=0;j<g[nod].size ();++j){ | ~^~~~~~~~~~~~~~~