Compilare: main.cpp: In function 'void print(std::vector<int>&)': main.cpp:9:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 9 | for (int i = 0; i < v.size(); ++i) { | ~~^~~~~~~~~~ main.cpp: In function 'void heapify(std::vector<int>&, int)': main.cpp:25:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | if (l < v.size() && v[l] > v[maxx]) { | ~~^~~~~~~~~~ main.cpp:28:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | if (r < v.size() && v[r] > v[maxx]) { | ~~^~~~~~~~~~