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 <iostream>
#include <algorithm>
#include <vector>
#include <map>
#include <math.h>
using namespace std;

#define INF (1<<31-1)
#define ll long long


int main(){

	int H, W, h, w;

	cin >> H >> W >> h >> w;

	if (W%w == 0 && H%h == 0){ cout << "No" << endl; return 0; }


	cout << "Yes" << endl;
	for (int i = 1; i <= H; i++){
		for (int j = 1; j <= W; j++){
			if (j%w != 0 || i%h != 0) cout << "1000 ";
			else cout << (-(h*w - 1) * 1000 - 1) << " ";
		}
		cout << endl;
	}


	return 0;
}