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(){
        //入力を受け取る
        int[] input = Console.ReadLine().Split().Select(int.Parse).ToArray();
        int x1,y1,x2,y2;
        x1 = input[0];
        y1 = input[1];
        x2 = input[2];
        y2 = input[3];
        /* (x3,y3)の導出
            (x3,y3) = (x2,y2) + (-(y2 - y1),x2 - x1)
        */
        int x3 = x2 - (y2 - y1);
        int y3 = y2 + (x2 - x1);
        /* (x4,y4)の導出
            (x4,y4) = (x1,y1) + (-(y2 - y1),x2 - x1)
        */
        int x4 = x1 - (y2 - y1);
        int y4 = y1 + (x2 - x1);
        //答えの出力
        Console.WriteLine("{0} {1} {2} {3}",x3,y3,x4,y4);
    }
}