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: Wrong Answer)

using System;

namespace Atcoder
{
    public class Program
    {
        public static void Main(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;
            int x4;
            int y3;
            int y4;
            if(x1!=x2){
                if(x1>x2){
                    x3 = x2;
                    y3 = y2 - (x1 - x2);
                    x4 = x1;
                    y4 = y3;
                }else{
                    x3 = x2;
                    x4 = x1;
                    y3 = y2 + (x2 - x1);
                    y4 = y3;
                }
            }else{
                if(y1>y2){
                    x3 = x2 + (y1 - y2);
                    x4 = x3;
                    y3 = y2;
                    y4 = y1;
                }else{
                    x3 = x2 - (y2-y1);
                    x4 = x3;
                    y3 = y2;
                    y4 = y1;
                }
            }
            Console.WriteLine(x3 + ' ' + y3 + ' ' + x4 + ' ' + y4);
        }
    }
}