Problem: You are given four integers: H, W, h and w (1 ≤ h ≤ H, 1 ≤ w ≤ W). Determine whether there exists a matrix such that all of the following conditions are held, and construct one such matrix if the answer is positive:

* The matrix has H rows and W columns.
* Each element of the matrix is an integer between -10^9 and 10^9 (inclusive).
* The sum of all the elements of the matrix is positive.
* The sum of all the elements within every subrectangle with h rows and w columns in the matrix is negative.

Constraints

* 1 ≤ h ≤ H ≤ 500
* 1 ≤ w ≤ W ≤ 500

Input

Input is given from Standard Input in the following format:


H W h w


Output

If there does not exist a matrix that satisfies all of the conditions, print `No`.

Otherwise, print `Yes` in the first line, and print a matrix in the subsequent lines in the following format:


a_{11} ... a_{1W}
:
a_{H1} ... a_{HW}


Here, a_{ij} represents the (i,\ j) element of the matrix.

Examples

Input

3 3 2 2


Output

Yes
1 1 1
1 -4 1
1 1 1


Input

2 4 1 2


Output

No


Input

3 4 2 3


Output

Yes
2 -5 8 7
3 -5 -4 -5
2 1 -1 7

Solution (in PYTHON3):

Solution:
import sys
input = sys.stdin.readline
sys.setrecursionlimit(pow(10, 6))

def main():
    H, W, h, w = map(int, input().split())
    if H % h == 0 and W % w == 0:
        print("No")
    elif H % h == 0:
        print("Yes")
        ans = [[0 for _ in range(W)] for _ in range(H)]
        for i in range(H):
            for j in range(0, W, w):
                ans[i][j] = 99999
                if j + w - 1 < W:
                    ans[i][j + w - 1] = -100000
        for a in ans:
            print(*a)
    else:
        print("Yes")
        ans = [[0 for _ in range(W)] for _ in range(H)]
        for i in range(W):
            for j in range(0, H, h):
                ans[j][i] = 99999
                if j + h - 1 < H:
                    ans[j + h - 1][i] = -100000
        for a in ans:
            print(*a)


if __name__ == '__main__':
    main()