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 Julia (0.5.0) (judge verdict: Wrong Answer)

parseInt(x) = parse(Int, x)
parseMap(x::Array{SubString{String},1}) = map(parseInt, x)

function main()
	hh,ww,h,w = readline() |> split |> parseMap
	if hh%h==0&&ww%w==0
		println("No")
	else
		println("Yes")
		if h==1&&w==2
			for i in 1:hh
				for j in 1:ww-1
					if j%w==0
						print(-ww," ")
					else
						print(ww-1," ")
					end
				end
				println(ww-1)
			end
		elseif h==2&&w==1
			for i in 1:hh
				for j in 1:ww-1
					if i%h==0
						print(-hh," ")
					else
						print(hh-1," ")
					end
				end
				if i%h==0
					println(-hh)
				else
					println(hh-1)
				end
			end
		else
			for i in 1:hh
				for j in 1:ww-1
					if i%h==0&&j%w==0
						print(-2*h*w+1," ")
					else
						print(2, " ")
					end
				end
				if i%h==0&&ww%w==0
					println(-2*h*w+1)
				else
					println(2)
				end
			end
		end
	end
end

main()