Compilare: main.cpp: In function 'void update(int, int, int)': main.cpp:28:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | for (int x = i; x <= auxx.size(); x += x & -x) | ~~^~~~~~~~~~~~~~ main.cpp:29:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for (int y = j; y <= auxy.size(); y += y & -y) | ~~^~~~~~~~~~~~~~