Compilare: main.cpp: In function 'std::vector<Point> convex_hull(std::vector<Point>)': main.cpp:41:48: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Point>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for(int i = 0, t = 1; i >= 0; i += (t = (i == P.size() - 1 ? -t : t))) { | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int get_max_x(std::vector<Point>&, int, d64)': main.cpp:55:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Point>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 55 | for(int i = 0; i < C.size() - 1; i++) { | ~~^~~~~~~~~~~~~~ main.cpp: In function 'int get_min_x(std::vector<Point>&, int, d64)': main.cpp:81:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Point>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 81 | for(int i = 0; i < C.size() - 1; i++) { | ~~^~~~~~~~~~~~~~ main.cpp: In function 'int get_min_y(std::vector<Point>&, int, d64)': main.cpp:107:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Point>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 107 | for(int i = 0; i < C.size() - 1; i++) { | ~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:155:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Point>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 155 | for(int i = 0; i < C.size() - 1; i++) { | ~~^~~~~~~~~~~~~~