Compilare: main.cpp: In function 'void popHeap()': main.cpp:52:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(p < heap.size()){ ~~^~~~~~~~~~~~~ main.cpp:56:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (p * 2 + 1 < heap.size() && heap[p * 2 + 1] < heap[fiu]){ ~~~~~~~~~~^~~~~~~~~~~~~ main.cpp:59:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (p * 2 + 2 < heap.size() && heap[p * 2 + 2] < heap[fiu]){ ~~~~~~~~~~^~~~~~~~~~~~~ main.cpp:46:6: warning: unused variable 'x' [-Wunused-variable] int x = heap[0].value; ^