Compilare: main.cpp: In function 'int main()': main.cpp:68:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | while((pos * 2 < heap.size() && heap[pos].first > heap[pos * 2].first) || | ~~~~~~~~^~~~~~~~~~~~~ main.cpp:69:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 69 | (pos * 2 + 1 < heap.size() && heap[pos].first > heap[pos * 2 + 1].first)) | ~~~~~~~~~~~~^~~~~~~~~~~~~ main.cpp:71:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 71 | if(pos * 2 + 1 >= heap.size() || heap[pos * 2].first < heap[pos * 2 + 1].first) | ~~~~~~~~~~~~^~~~~~~~~~~~~~