Compilare: main.cpp: In function 'int main()': main.cpp:34:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for(int i = 0;i < posts.size(); ++i) | ~~^~~~~~~~~~~~~~ main.cpp:38:22: warning: comparison of integer expressions of different signedness: 'std::priority_queue<post>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 38 | if(pq.size() < m) | ~~~~~~~~~~^~~