#include <bits/stdc++.h>   using namespace std;   int main() {     ios::sync_with_stdio(false);     int x1, x2, y1, y2;     cin >> x1 >> y1 >> x2 >> y2;     if (x1 == x2) {       int w = max(y1, y2) - min(y1, y2);       cout << x1 + w <<     << y1 <<     << x2 + w <<     << y2 << endl;     } else if (y1 == y2) {       int w = max(x1, x2) - min(x1, x2);       cout << x1 <<     << y1 + w <<     << x2 <<     << y2 + w << endl;     } else if (abs(x1 - x2) == abs(y1 - y2)) {       cout << x1 <<     << y2 <<     << x2 <<     << y1 << endl;     } else {       cout << -1 << endl;     }     return 0;   }   