Compilare: main.cpp: In function 'int main()': main.cpp:99:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<double, double> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 99 | for (int i = 2; i < hull.size(); ++i) | ~~^~~~~~~~~~~~~ main.cpp:109:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<double, double> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 109 | for (int i = 0; i < hull.size(); ++i) { | ~~^~~~~~~~~~~~~ main.cpp:120:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<double, double> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 120 | for (int i = 1; i < hull.size(); ++i) { | ~~^~~~~~~~~~~~~ main.cpp:92:7: warning: variable 'ba' set but not used [-Wunused-but-set-variable] 92 | int ba = 0, ta = 0, la = 0, ra = 0; | ^~ main.cpp:92:15: warning: variable 'ta' set but not used [-Wunused-but-set-variable] 92 | int ba = 0, ta = 0, la = 0, ra = 0; | ^~ main.cpp:92:23: warning: variable 'la' set but not used [-Wunused-but-set-variable] 92 | int ba = 0, ta = 0, la = 0, ra = 0; | ^~ main.cpp:92:31: warning: variable 'ra' set but not used [-Wunused-but-set-variable] 92 | int ba = 0, ta = 0, la = 0, ra = 0; | ^~