Compilare: main.cpp: In function 'bool cmp(pct, pct)': main.cpp:24:52: warning: suggest parentheses around '&&' within '||' [-Wparentheses] 24 | return det(a[1], x, y)>0 || det(a[1], x, y)==0 && x.d>y.d; | ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:37:33: warning: suggest parentheses around '&&' within '||' [-Wparentheses] 37 | if(a[i].y<yv||a[i].y==yv&&a[i].x<xv) xv=a[i].x, yv=a[i].y, swap(a[1],a[i]); | ~~~~~~~~~~^~~~~~~~~~~ main.cpp:85:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 85 | for(i=0;i<v.size()-1;i++){ | ~^~~~~~~~~~~