Compilare: main.cpp: In function 'int main()': main.cpp:63:36: warning: comparison of integer expressions of different signedness: 'std::vector<Point_t>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 63 | while (hull.size() > M) { | ~~~~~~~~~~~~^~~ main.cpp:81:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Point_t>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 81 | for (int i = 1; i < hull.size(); i++) { | ~~^~~~~~~~~~~~~