Compilare: main.cpp: In member function 'void MinHeap::repairHeapDown(int)': main.cpp:30:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | while ((pos * 2 < heap.size() && heap[pos * 2].first < heap[pos].first ) || | ~~~~~~~~^~~~~~~~~~~~~ main.cpp:31:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | (pos * 2 + 1 < heap.size() && heap[pos * 2 + 1].first < heap[pos].first)) { | ~~~~~~~~~~~~^~~~~~~~~~~~~ main.cpp:33:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | if (pos * 2 + 1 >= heap.size() || heap[pos * 2].first < heap[pos * 2 + 1].first) { | ~~~~~~~~~~~~^~~~~~~~~~~~~~