func_code_string: #include <bits/stdc++.h>   using namespace std;   struct str {     int x1;     int y1;     int x2;     int y2;   };   bool compare(str &a, str &b) {     if (a.x1 < b.x1)       return true;     else if (a.x1 == b.x1) {       if (a.x2 < b.x2)         return true;       else if (a.x2 == b.x2) {         if (a.y1 < b.y1)           return true;         else if (a.y1 <= b.y1) {           return (a.y2 < b.y2);         }       }     }     return false;   }   int main() {     int n;     cin >> n;     vector<str> v(n);     for (int i = 0; i < n; i++) {       cin >> v[i].x1 >> v[i].y1 >> v[i].x2 >> v[i].y2;     }     sort(v.begin(), v.end(), compare);     int x11 = v[0].x1;     int y11 = v[0].y1;     int x22 = v[0].x2;     int y22 = v[0].y2;     int flag = 0, ind = 0, counter = 1;     for (int i = 1; i < n; i++) {       int x1 = max(x11, v[i].x1);       int x2 = min(x22, v[i].x2);       int y1 = max(y11, v[i].y1);       int y2 = min(y22, v[i].y2);       int x1r = x2 - x1;       int y1r = y2 - y1;       if ((x1r < 0 || y1r < 0) && !flag) {         ind = i;       } else {         x11 = x1, y11 = y1, x22 = x2, y22 = y2;         counter++;       }     }     if (counter == n - 1)       cout << x11 <<     << y11 << endl;     else {       x11 = v[ind].x1, y11 = v[ind].y1, x22 = v[ind].x2, y22 = v[ind].y2;       for (int i = 1; i < n; i++) {         int x1 = max(x11, v[i].x1);         int x2 = min(x22, v[i].x2);         int y1 = max(y11, v[i].y1);         int y2 = min(y22, v[i].y2);         int x1r = x2 - x1;         int y1r = y2 - y1;         if ((x1r < 0 || y1r < 0) && !flag) {           ind = i;         } else {           x11 = x1, y11 = y1, x22 = x2, y22 = y2;           counter++;         }       }       cout << x11 <<     << y11 << endl;     }   }   