Compilare: main.cpp: In function 'void del(int)': main.cpp:42:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (2 * currentPosition < heap.size()) { ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~ main.cpp:43:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (2 * currentPosition + 1 >= heap.size() or heap[2 * currentPosition].value < heap[2 * currentPosition + 1].value) { ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~