Compilare: user.cpp: In function ‘void HeapDown(int)’: user.cpp:26:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (node * 2 + 1 < minHeap.size()) ^ user.cpp:28:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (node * 2 + 2 < minHeap.size() && minHeap[node * 2 + 1].first > minHeap[node * 2 + 2].first) ^ user.cpp: In function ‘int Remove(int)’: user.cpp:42:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (numberToRemove != minHeap.size()) { ^ user.cpp:46:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:50:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("heapuri.out", "w", stdout); ^