func_code_string: #include <bits/stdc++.h>   using namespace std;   int n = 8;   struct point {     int x;     int y;   };   bool f(point a, point b) {     if (a.x != b.x) return a.x > b.x;     return a.y > b.y;   }   int main() {     point a[8];     for (int i = 0; i < n; i++) cin >> a[i].x >> a[i].y;     int t1 = 0, t2 = 0;     for (int i = 0; i < n; i += 2) {       if (a[i].x == a[i + 1].x) {         t1++;       } else if (a[i].y == a[i + 1].y)         t2++;       else {         cout <<  NO  << endl;         return 0;       }     }     if (t1 != 2 || t2 != 2) {       cout <<  NO  << endl;       return 0;     }     int t = 0;     sort(a, a + n, f);     if (a[1].x == a[2].x && a[1].y == a[2].y ||         a[3].x == a[4].x && a[3].y == a[4].y ||         a[5].x == a[6].x && a[5].y == a[6].y) {       cout <<  NO  << endl;       return 0;     }     for (int i = 0; i < n; i += 2) {       if (a[i].x == a[i + 1].x && a[i].y == a[i + 1].y)         t++;       else {         cout <<  NO  << endl;         return 0;       }     }     if (t == 4)       cout <<  YES  << endl;     else       cout <<  NO  << endl;     return 0;   }   