Compilare: main.cpp: In member function 'bool punct::operator<(const punct&)': main.cpp:21:35: warning: suggest parentheses around '&&' within '||' [-Wparentheses] 21 | return x<other.x||x==other.x&&y<other.y; | ~~~~~~~~~~^~~~~~~~~~~ main.cpp: In function 'bool cmp(punct, punct)': main.cpp:39:48: warning: suggest parentheses around '&&' within '||' [-Wparentheses] 39 | return cross(zero,a,b)<0||cross(zero,a,b)==0&&dist(zero,a)<dist(zero,b); | ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'std::vector<punct> convexhull(std::vector<punct>&)': main.cpp:46:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<punct>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 46 | for(int i=0;i<pts.size();i++) | ~^~~~~~~~~~~ main.cpp:53:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<punct>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | for(int i=2;i<pts.size();i++) | ~^~~~~~~~~~~