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 Java8 (OpenJDK 1.8.0) (judge verdict: Wrong Answer)

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		int x1 = sc.nextInt();
		int y1 = sc.nextInt();
		int x2 = sc.nextInt();
		int y2 = sc.nextInt();

		int x3 = 0;
		int y3 = 0;
		int x4 = 0;
		int y4 = 0;

		if (x1 == x2) {
			y3 = y2;
			y4 = y1;
			if (y1 < y2) {
				x3 = x2 - Math.abs(y2 - y1);
				x4 = x3;
			} else {
				x3 = x2 + Math.abs(y1 - y2);
				x4 = x3;
			}
		} else if (y1 == y2) {
			x3 = x2;
			x4 = x1;
			if (x1 < x2) {
				y3 = y2 + Math.abs(x2 - x1);
				y4 = y3;
			} else {
				y3 = y2 - Math.abs(x1 - x2);
				y4 = y3;
			}
		} else {
			if (x1 < x2) {
				if (y1 < y2) {
					x3 = x2 - Math.abs(y2 - y1);
					y3 = y2 + Math.abs(x2 - x1);
					x4 = x3 - Math.abs(x2 - x1);
					y4 = y3 - Math.abs(y2 - y1);
				} else {
					x3 = x2 + Math.abs(y1 - y2);
					y3 = y2 + Math.abs(x2 - x1);
					x4 = x3 - Math.abs(x2 - x1);
					y4 = y3 - Math.abs(y1 - y2);
				}
			} else {
				if (y1 < y2) {
					x3 = x2 - Math.abs(y2 - y1);
					y3 = y2 - Math.abs(x1 - x2);
					x4 = x3 + Math.abs(x1 - x2);
					y4 = y3 - Math.abs(y2 - y1);
				} else {
					x3 = x2 + Math.abs(y1 - y2);
					y3 = y2 - Math.abs(x1 - x2);
					x4 = x3 + Math.abs(x1 - x2);
					y4 = y3 + Math.abs(y1 - y2);
				}
			}

		}

		System.out.println(x3 + " " + y3 + " " + x4 + " " + y4);

		sc.close();
	}

}