Compilare: main.cpp: In function 'int main()': main.cpp:100:24: warning: comparison of integer expressions of different signedness: 'std::priority_queue<std::pair<int, int>, std::vector<std::pair<int, int> >, std::greater<std::pair<int, int> > >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 100 | if(hh[p].size()==u[p].second) | ~~~~~~~~~~~~^~~~~~~~~~~~~