Compilare: user.cpp: In function ‘bool cmp(int, int)’: user.cpp:31:41: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] return v[x].x<v[y].x||v[x].x==v[y].x&&v[x].y<v[y].y; ^ user.cpp: In function ‘int main()’: user.cpp:67:41: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(v[x].x>v[y].x||v[x].x==v[y].x&&v[x].y>v[y].y) ^ user.cpp:71:41: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(v[x].x>v[z].x||v[x].x==v[z].x&&v[x].y>v[z].y) ^ user.cpp:75:41: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(v[y].x>v[z].x||v[y].x==v[z].x&&v[y].y>v[z].y) ^