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 n, m, a, b;
int arr[600][600];

int main() {
    int i, j;

    scanf("%d%d%d%d",&n,&m,&a,&b);
    if (n%a==0&&m%b==0) {
        printf("No\n");
        return 0;
    }
    printf("Yes\n");
    for (i=0;i<n;i+=a) {
        for (j=0;j<m;j+=b) arr[i][j] = 1000000;
    }
    for (i=a-1;i<n;i+=a) {
        for (j=b-1;j<m;j+=b) arr[i][j] = -1000001;
    }
    for (i=0;i<n;i++) {
        for (j=0;j<m;j++) printf("%d ",arr[i][j]);
        printf("\n");
    }

    return 0;
}