Compilare: main.cpp: In function 'void del(int)': main.cpp:34:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Node>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | while(2 * position < heap.size()) | ~~~~~~~~~~~~~^~~~~~~~~~~~~ main.cpp:36:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Node>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | if(2 * position + 1 >= heap.size() or heap[2 * position].value < heap[2 * position + 1].value) | ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~