Problem:
Score : 700 points

Problem Statement

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.

Sample Input 1

3 3 2 2

Sample Output 1

Yes
1 1 1
1 -4 1
1 1 1

The sum of all the elements of this matrix is 4, which is positive.
Also, in this matrix, there are four subrectangles with 2 rows and 2 columns as shown below. For each of them, the sum of all the elements inside is -1, which is negative.

Sample Input 2

2 4 1 2

Sample Output 2

No

Sample Input 3

3 4 2 3

Sample Output 3

Yes
2 -5 8 7
3 -5 -4 -5
2 1 -1 7

Solution in C++14 (GCC 5.4.1) (judge verdict: Wrong Answer)

#include<cstdio>
const int MAXN=505;

int H,W,h,w;
int arr[MAXN][MAXN];

int main()
{
	scanf("%d%d%d%d",&H,&W,&h,&w);
	long long sum=0;
	int k=999999999/(h*w);
	{
		sum=0;
		for(int i=1;i<=H;i++)
			for(int j=1;j<=W;j++)
			{
				if(i%h==0&&j%w==0)
					arr[i][j]=-k*h*w+(k!=1);
				else
					arr[i][j]=k;
				sum+=arr[i][j];
			}
		if(sum>0)
		{
			puts("Yes");
			for(int i=1;i<=H;i++)
			{
				for(int j=1;j<=W;j++)
					printf("%d ",arr[i][j]);
				puts("");
			}
			return 0;
		}
	}
	puts("No");
	
	return 0;
}