func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int minx, maxx, miny, maxy, sumofarea = 0;     int n;     cin >> n;     for (int i = 0; i < n; i++) {       int x1, y1, x2, y2;       cin >> x1 >> y1 >> x2 >> y2;       if (i == 0) {         minx = x1;         maxx = x2;         miny = y1;         maxy = y2;       } else {         minx = min(minx, x1);         maxx = max(maxx, x2);         miny = min(miny, y1);         maxy = max(maxy, y2);       }       sumofarea += ((x2 - x1) * (y2 - y1));     }     int final_square_area = (maxx - minx) * (maxy - miny);     int lengthofside1 = maxx - minx;     int lengthofside2 = maxy - miny;     if (sumofarea == final_square_area && (lengthofside1 == lengthofside2)) {       cout <<  YES ;     } else {       cout <<  NO ;     }     return 0;   }   