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.Text;

namespace AtTest.ABC_108
{
    class B
    {
        static void Main(string[] args)
        {
            Method(args);
            Console.ReadLine();
        }

        static void Method(string[] args)
        {
            string[] input = Console.ReadLine().Split(' ');
            int x1 = int.Parse(input[0]);
            int y1 = int.Parse(input[1]);
            int x2 = int.Parse(input[2]);
            int y2 = int.Parse(input[3]);

            int x3, y3, x4, y4;

            /*if (x1 == x2)
            {
                int length = Math.Abs(y2 - y1);
                if (y1 < y2)
                {
                    x3 = x1 - length;
                }
                else
                {
                    x3 = x1 + length;
                }
                x4 = x3;
                y3 = y2;
                y4 = y1;
            }
            else
            {
                int length = Math.Abs(x2 - x1);
                if (x1 < x2)
                {
                    y3 = y1 + length;
                }
                else
                {
                    y3 = y1 - length;
                }
                y4 = y3;
                x3 = x2;
                x4 = x1;
            }*/

            x3 = x2 - (y2 - y1);
            y3 = y2 + (x2 - x1);
            x4 = x3 - (x2 - x1);
            y4 = y3 - (y2 - y1);

            Console.WriteLine(x3+" "+y3+" "+ x4 + " " + y4);
        }
    }
}