Compilare: main.cpp: In function 'int main()': main.cpp:23:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for(int i=0;i<buckets.size();i++){ | ~^~~~~~~~~~~~~~~ main.cpp:27:25: warning: comparison of integer expressions of different signedness: 'std::priority_queue<int, std::vector<int>, std::greater<int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 27 | while(pq.size() > i+1){ | ~~~~~~~~~~^~~~~