func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int x0, y0, x, y;     cin >> x0 >> y0 >> x >> y;     if (x0 != x && y != y0 && abs(x - x0) != abs(y - y0)) {       cout <<  -1  << endl;       return 0;     }     int dx = abs(y - y0);     int dy = abs(x0 - x);     if (x0 == x)       cout << x0 + dx <<     << y0 <<     << x + dx <<     << y << endl;     else if (y0 == y)       cout << x0 <<     << y0 + dy <<     << x <<     << y + dy << endl;     else       cout << x0 <<     << y <<     << x <<     << y0 << endl;     return 0;   }   