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
   unomi */

#include <stdio.h>

// 頂点を表す構造体 point
typedef struct point{
    int x_elem;
    int y_elem;
}point;

point shift_point(point pnt, int dist_x, int dist_y){
    // 新しい頂点の宣言
    point new_pnt={0,0};
    // 頂点の計算
    new_pnt.x_elem = pnt.x_elem + dist_y;
    new_pnt.y_elem = pnt.y_elem - dist_x;
    return new_pnt;
}

int main(void){
    int dist_x, dist_y;
    point pnt_1={0,0}, pnt_2={0,0}, pnt_3={0,0}, pnt_4={0,0};
    // 頂点の取得
    scanf("%d %d %d %d", &pnt_1.x_elem, &pnt_1.y_elem, &pnt_2.x_elem, &pnt_2.y_elem);

    // pnt_1,2のx軸方向での距離：pnt_1.x_elem - pnt_2.x_elem
    //          y軸方向での距離：pnt_1.y_elem - pnt_2.y_elem
    dist_x = pnt_1.x_elem - pnt_2.x_elem;
    dist_y = pnt_1.y_elem - pnt_2.y_elem;

    // 関数shift_point で移動した他の頂点を求める
    pnt_3 = shift_point(pnt_2, dist_x, dist_y);
    pnt_4 = shift_point(pnt_1, dist_x, dist_y);

    printf("%d %d %d %d\n", pnt_3.x_elem, pnt_3.y_elem, pnt_4.x_elem, pnt_4.y_elem);

    return 0;
}