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;
using System.Text;

namespace AtCoder
{
	class Program
	{
		static void Main(string[] args)
		{
			Question.Exec();
		}
	}

	public static class Question
	{
		public static void Exec()
		{
			var array = Console.ReadLine().Split(' ').Select(i => double.Parse(i)).ToArray();
			var x = new double[4];
			var y = new double[4];
			x[0] = array[0];
			y[0] = array[1];
			x[1] = array[2];
			y[1] = array[3];
			double[] vx1 = { x[1] - x[0], y[1] - y[0] };

			double[] vx2 = new double[2];
			double theta = 45.0 / 180.0 * Math.PI;
			vx2[0] = Math.Round((vx1[0] * Math.Cos(theta) - vx1[1] * Math.Sin(theta)) * Math.Sqrt(2));
			vx2[1] = Math.Round((vx1[0] * Math.Sin(theta) + vx1[1] * Math.Cos(theta)) * Math.Sqrt(2));
			x[2] = vx2[0] + x[0];
			y[2] = vx2[1] + y[0];

			theta = 90.0 / 180.0 * Math.PI;
			vx2[0] = Math.Round(vx1[0] * Math.Cos(theta) - vx1[1] * Math.Sin(theta));
			vx2[1] = Math.Round(vx1[0] * Math.Sin(theta) + vx1[1] * Math.Cos(theta));
			x[3] = vx2[0] + x[0];
			y[3] = vx2[1] + y[0];

			//string answer = "No";
			Console.WriteLine($"{x[2]:f0} {y[2]:f0} {x[3]:f0} {y[3]:f0}");
			Console.ReadLine();
		}
	}
}