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 <bits/stdc++.h>
using namespace std;
int main()
{
	const int mods = 1000;
	int n = 0, m = 0, h = 0, w = 0;
	cin >> n >> m >> h >> w;
	if((n * m - (n / h * h) * (m / w * w)) * mods <= (n / h) * (m / w))
	{
		cout << "No" << endl;
		return 0;
	}
	cout << "Yes" << endl;
	for(int i = 1; i <= n; i++, putchar('\n'))
		for(int j = 1; j <= m; j++, putchar(' '))
			printf("%d", (i % h == 0 && j % w == 0)? mods - 1 - mods * (h * w): mods);
	return 0;
}