func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int x1, y1, x2, y2, x3, y3, x4, y4;     cin >> x1 >> y1 >> x2 >> y2;     int x_diff = x1 - x2;     int y_diff = y1 - y2;     if (x_diff != 0 and y_diff != 0) {       x3 = x1;       y3 = y2;       x4 = x2;       y4 = y1;     } else if (x_diff != 0) {       x3 = x1;       y3 = y1 + abs(x_diff);       x4 = x2;       y4 = y2 + abs(x_diff);     } else {       x3 = x1 + abs(y_diff);       y3 = y1;       x4 = x2 + abs(y_diff);       y4 = y2;     }     if (x_diff != 0 and y_diff != 0 and abs(x_diff) != abs(y_diff))       cout << -1 << endl;     else       cout << x3 <<     << y3 <<     << x4 <<     << y4 << endl;     return 0;   }   