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:
# coding:utf-8

import sys


input = sys.stdin.readline


def inpl(): return list(map(int, input().split()))


def solve():
    H, W, h, w = inpl()

    if H % h == 0 and W % w == 0:
        print('No')
        return -1

    ans = [[1000] * W for _ in range(H)]
    cnt = 0
    for i in range(h - 1, H, h):
        for j in range(w - 1, W, w):
            ans[i][j] = -(h * w - 1) * 1000 - 1
            cnt += 1

    print('Yes')
    for row in ans:
        print(' '.join(map(str, row)))

    return 0


solve()