Compilare: main.cpp: In member function 'void Heap::Sink(int)': main.cpp:63:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(2 * Node + 1 > _heap.size() - 1 && 2 * Node > _heap.size() - 1) ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~ main.cpp:63:52: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(2 * Node + 1 > _heap.size() - 1 && 2 * Node > _heap.size() - 1) ~~~~~~~~~^~~~~~~~~~~~~~~~~~ main.cpp:65:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(2 * Node + 1 > _heap.size() - 1 && 2 * Node <= _heap.size() - 1 && _heap[2 * Node].first < _heap[Node].first) ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~ main.cpp:65:52: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(2 * Node + 1 > _heap.size() - 1 && 2 * Node <= _heap.size() - 1 && _heap[2 * Node].first < _heap[Node].first) ~~~~~~~~~^~~~~~~~~~~~~~~~~~~ main.cpp:75:76: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(_heap[max_value_index].first < _heap[Node].first && max_value_index <= _heap.size() - 1) ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~