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 CPP):

Solution:
#include <cstdio>

const int maxn = 510;

int n, m, a, b, x, y;

int main() {
	scanf("%d%d%d%d", &n, &m, &a, &b);
	if(n % a == 0 && m % b == 0) {
		puts("No");
		return 0;
	}
	x = 4000;
	y = x * (a * b - 1) + 1;
	y = -y;
	puts("Yes");
	for (int i = 1; i <= n; ++i) {
		for (int j = 1; j <= m; ++j) {
			printf("%d%c", (i % a == 0 && j % b == 0) ? y : x, " \n"[j == m]);
		}
	}
	return 0;
}