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
   cy_an  */

#include <stdio.h>

// 構造体の宣言
typedef struct point{
    int x_elem;
    int y_elem;
}point;

// a + bを返す関数
point shift_point(point a, point b){
    point c;
    c.x_elem = a.x_elem + b.x_elem;
    c.y_elem = a.y_elem + b.y_elem;
    return(c);
}

int main(void){

    
    point p1, p2, p3, p4, vector12, vector14;

    // 構造体へ代入
    scanf("%d %d %d %d", &p1.x_elem, &p1.y_elem, &p2.x_elem, &p2.y_elem);

    // 計算
    // vector12 = p2 - p1
    vector12.x_elem = p2.x_elem - p1.x_elem;
    vector12.y_elem = p2.y_elem - p1.y_elem;
    // 90degree turn
    vector14.x_elem = -vector12.y_elem;
    vector14.y_elem = vector12.x_elem;
    // p4 = p1 + vector14
    p4 = shift_point(p1, vector14);
    // p3.y_elem = p4.y_elem + vector12.y_elem;
    p3 = shift_point(p4, vector12);

    // 値の出力
    printf("%d %d %d %d\n", p3.x_elem, p3.y_elem, p4.x_elem, p4.y_elem);

    return 0;
}