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>

using namespace std;

int H,W,h,w;

int main() {
	cin >> H >> W >> h >> w;
	if (H%h != 0 || W%w != 0) {
		cout << "Yes\n";

		int k=(H/h)*(W/w)+1;
		for (int i=0; i<H; i++) {
			for (int j=0; j<W; j++) {
				if (i%h == h-1 && j%w == w-1)
					cout << -k-1 << " ";
				else if (i%h == 0 && j%w == 0)
					cout << k << " ";
				else
					cout << "0 ";
			}
			cout << "\n";
		}
	} else {
		cout << "No\n";
	}
}