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 (GCC 5.4.1) (judge verdict: Wrong Answer)

#include<stdio.h>

int main(void) {
	int x1, x2, x3, x4, y1, y2, y3, y4, d1, d2;
	scanf("%d %d %d %d", &x1, &y1, &x2, &y2);
	d1 = x2 - x1;
	d2 = y2 - y1;
	

	if (d1 > 0 && d2 > 0) {//pattern1
	   x3 = x2 - d2;
	   y3 = y2 + d1;
	   x4 = x3 - d1;
	   y4 = y3 - d2;
     }
	if(d1>0&&d2<0){//pattern2
		if (d1 < 0) {
			d1 = -d1;
		};
		if (d2 < 0) {
			d2 = -d2;
		};
		x3 = x2 - d2;
		y3 = y2 - d1;
		x4 = x3 - d1;
		y4 = y3 + d2;
	}
	if (d1<0&&d2>0){//pattern3
		if (d1 < 0) {
			d1 = -d1;
		};
		if (d2 < 0) {
			d2 = -d2;
		};
		x3 = x2 - d2;
		y3 = y2 - d1;
		x4 = x3 + d1;
		y4 = y3 - d2;
	}
	if(d1<0&&d2<0){//pattern4
		if (d1 < 0) {
			d1 = -d1;
		};
		if (d2 < 0) {
			d2 = -d2;
		};
		x3 = x2 + d2;
		y3 = y2 - d1;
		x4 = x3 + d1;
		y4 = y3 + d2;
	}
	if (d1 > 0 && d2 == 0) {//pattern1
		x3 = x2;
		y3 = y2 + d1;
		x4 = x3 - d1;
		y4 = y3;
	}
	if (d1 ==0 && d2 > 0) {//pattern1
		x3 = x2 - d2;
		y3 = y2 + d1;
		x4 = x3 - d1;
		y4 = y3 - d2;
	}
	printf("%d %d %d %d", x3, y3, x4, y4);
}