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 9.2.1) (judge verdict: Accepted)

/* ex 7_1
   nknm */

#include <stdio.h>
#include <math.h>

typedef struct point{       //構造体を定義
    int x_elem;
    int y_elem;
}point;

point shift_point_3(point p1, point p2){        //p2を中心にp1を時計回りに90°回転させp3を求める
    point p3;
    p3.x_elem = p1.y_elem - p2.y_elem + p2.x_elem;
    p3.y_elem = p2.x_elem - p1.x_elem + p2.y_elem;
    
    return p3;
}
point shift_point_4(point p1, point p2){        //p1を中心にp2を反時計回りに90°回転させp4を求める
    point p4;
    p4.x_elem = p1.y_elem - p2.y_elem + p1.x_elem;
    p4.y_elem = p2.x_elem - p1.x_elem + p1.y_elem;
    return p4;
}

int main(void){

    int x1, y1, x2, y2;
    scanf("%d %d %d %d", &x1, &y1, &x2, &y2);

    point p1 = {x1, y1}, p2 = {x2, y2}, p3, p4;     //point型で定義

    p3 = shift_point_3(p1, p2);     //p3,p4を求める
    p4 = shift_point_4(p1, p2);

    printf("%d %d %d %d", p3.x_elem, p3.y_elem, p4.x_elem, p4.y_elem);

    return 0;
}