Problem:
Score : 200 points

Problem Statement

There is a square in the xy-plane. The coordinates of its four vertices are (x_1,y_1),(x_2,y_2),(x_3,y_3) and (x_4,y_4) in counter-clockwise order.
(Assume that the positive x-axis points right, and the positive y-axis points up.)

Takahashi remembers (x_1,y_1) and (x_2,y_2), but he has forgot (x_3,y_3) and (x_4,y_4).

Given x_1,x_2,y_1,y_2, restore x_3,y_3,x_4,y_4. It can be shown that x_3,y_3,x_4 and y_4 uniquely exist and have integer values.

Constraints

|x_1|,|y_1|,|x_2|,|y_2| \leq 100

(x_1,y_1) ≠ (x_2,y_2)

All values in input are integers.

Input

Input is given from Standard Input in the following format:

x_1 y_1 x_2 y_2

Output

Print x_3,y_3,x_4 and y_4 as integers, in this order.

Sample Input 1

0 0 0 1

Sample Output 1

-1 1 -1 0

(0,0),(0,1),(-1,1),(-1,0) is the four vertices of a square in counter-clockwise order.
Note that (x_3,y_3)=(1,1),(x_4,y_4)=(1,0) is not accepted, as the vertices are in clockwise order.

Sample Input 2

2 3 6 6

Sample Output 2

3 10 -1 7

Sample Input 3

31 -41 -59 26

Sample Output 3

-126 -64 -36 -131

Solution in C# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
	static void Main()
	{
		var t = Array.ConvertAll(Console.ReadLine().Split(new[] { ' ' }), number => int.Parse(number));
		var x1 = t[0];
		var y1 = t[1];
		var x2 = t[2];
		var y2 = t[3];

		var diffX = Math.Abs(x2 - x1);
		var diffY = Math.Abs(y2 - y1);

		if (x1 == x2) {
			if (y1 < y2) {
				Console.WriteLine($"{x1 - diffY} {y2} {x1 - diffY} {y1}");
			} else {
				Console.WriteLine($"{x1 + diffY} {y2} {x1 + diffY} {y1}");
			}
		} else if (y1 == y2) {
			if (x1 < x2) {
				Console.WriteLine($"{x2} {y2 + diffX} {x1} {y1 + diffX}");
			} else {
				Console.WriteLine($"{x2} {y2 - diffX} {x1} {y1 - diffX}");
			}
		} else if (x1 < x2) {
			if (y1 < y2) {
				Console.WriteLine($"{x2 - diffY} {y2 + diffX} {x1 - diffY} {y1 + diffX}");
			} else {
				Console.WriteLine($"{x2 + diffY} {y2 + diffX} {x1 + diffY} {y1 + diffX}");
			}
		} else {
			if (y1 < y2) {
				Console.WriteLine($"{x2 - diffY} {y2 - diffX} {x1 - diffY} {y1 - diffX}");
			} else {
				Console.WriteLine($"{x2 + diffY} {y2 - diffX} {x1 + diffY} {y1 - diffX}");
			}
		}

		//デバッグ実行での確認用。そのまま提出しても問題なし
		Console.ReadKey();
	}
}