Compilare: main.cpp: In member function 'void Heap::down(int)': main.cpp:26:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | while (pos * 2 < h.size()) { | ~~~~~~~~^~~~~~~~~~ main.cpp:28:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | if (pos * 2 + 1 < h.size() && v[h[pos * 2 + 1]] < v[h[fiu]]) | ~~~~~~~~~~~~^~~~~~~~~~ main.cpp: In member function 'void Heap::erase(int)': main.cpp:53:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | if (pos < h.size()) { | ~~~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:80:9: warning: unused variable 'a' [-Wunused-variable] 80 | int a = 1; | ^