Compilare: main.cpp: In function 'int main()': main.cpp:61:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Element>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 61 | while(2 * position < heap.size()) | ~~~~~~~~~~~~~^~~~~~~~~~~~~ main.cpp:63:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Element>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 63 | if(2 * position + 1 >= heap.size() or heap[2 * position].value < heap[2 * position + 1].value) | ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~