Compilare: main.cpp: In function 'void printHeap(std::vector<int>&, std::istream&, std::ostream&)': main.cpp:85:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 85 | for (int i = 1; i < arr.size(); i++) | ~~^~~~~~~~~~~~ main.cpp: In function 'std::vector<int> minHeapify(std::vector<int>&)': main.cpp:96:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 96 | for (int i = 0; i < arr.size(); i++) | ~~^~~~~~~~~~~~ main.cpp: In function 'void printVector(std::vector<int>&, std::istream&, std::ostream&)': main.cpp:144:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 144 | for (int i = 0; i < arr.size(); i++) | ~~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:169:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 169 | for (int i = 0; i < arr.size(); i++) | ~~^~~~~~~~~~~~