Compilare: main.cpp: In function 'int main()': main.cpp:39:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long double, long double> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for (int i = 1; i < points.size(); i++) { | ~~^~~~~~~~~~~~~~~ main.cpp:47:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long double, long double> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | for (int i = 1; i < points.size(); i++) { | ~~^~~~~~~~~~~~~~~ main.cpp:55:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long double, long double> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 55 | for(int i = 0; i < hull1.size(); i++) { | ~~^~~~~~~~~~~~~~