Compilare: main.cpp: In member function 'void Heap::heapify(int)': main.cpp:19:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | if(st<h.size() && h[st]<h[min]) | ~~^~~~~~~~~ main.cpp:21:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | if(dr<h.size() && h[dr]<h[min]) | ~~^~~~~~~~~