Compilare: main.cpp: In function 'bool bfs()': main.cpp:53:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | for(int i=0;i<v[node].size();i++){ | ~^~~~~~~~~~~~~~~ main.cpp: In function 'void solve()': main.cpp:68:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | for(int i=0;i<v[n].size();i++){ | ~^~~~~~~~~~~~