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>
#include <iostream>
#include <cstdio>
using namespace std;

int a[510][510],H,W,h,w;
int main()
{
	scanf("%d%d%d%d",&H,&W,&h,&w);
	if (!(H%h)&&!(W%w)) return puts("No"),0;
	puts("Yes");
	a[0][0]=(((H/h)*(W/w)) / ((H/h)+(W/w)-1))+1000000;
	a[h-1][w-1]=-a[0][0]-1;
	for (int i=0;i<H;i++,puts(""))
	for (int j=0;j<W;j++)
		printf("%d ",a[i%h][j%w]);
	return 0;
}