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 a[1000][1000],H,W,h,w;

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin>>H>>W>>h>>w;
    for (int i=1;i<=H;i++)
        for (int j=1;j<=W;j++)
            if (i%h==0 && j%w==0) a[i][j]=-696*(h*w-1)-1;
            else a[i][j]=696;
    int sum=0;
    for (int i=1;i<=H;i++)
        for (int j=1;j<=W;j++) sum+=a[i][j];
    if (sum<=0) {
        cout<<"No";
        return 0;
    }
    cout<<"Yes"<<endl;
    for (int i=1;i<=H;i++) {
        for (int j=1;j<=W;j++) cout<<a[i][j]<<" ";
        cout<<endl;
    }
}