Consider a table of size n × m, initially fully white. Rows are numbered 1 through n from top to bottom, columns 1 through m from left to right. Some square inside the table with odd side length was painted black. Find the center of this square.

Input

The first line contains two integers n and m (1 ≤ n, m ≤ 115) — the number of rows and the number of columns in the table.

The i-th of the next n lines contains a string of m characters s_{i1} s_{i2} … s_{im} (s_{ij} is 'W' for white cells and 'B' for black cells), describing the i-th row of the table.

Output

Output two integers r and c (1 ≤ r ≤ n, 1 ≤ c ≤ m) separated by a space — the row and column numbers of the center of the black square.

Examples

Input

5 6
WWBBBW
WWBBBW
WWBBBW
WWWWWW
WWWWWW


Output

2 4


Input

3 3
WWW
BWW
WWW


Output

2 1
import java.util.Scanner;
public class Ishu
{
	public static void main(String[] args)
	{
	Scanner scan=new Scanner(System.in);
	int n,m,i,j,x=0,r1=0,c1=0,r2=0,c2=0;
	String str;
	n=scan.nextInt();
	m=scan.nextInt();
	for(i=0;i<n;++i)
		{
		str=scan.next();
		for(j=0;j<m;++j)
			{
			if(str.substring(j,j+1).equals("B"))
				{
				if(x==0)
					{
					r2=r1=i+1;
					c2=c1=j+1;					
					++x;
					}
				else
					{
					r2=i+1;
					c2=j+1;
					}
				}
			}
		}
	System.out.println(((r1+r2)/2)+" "+((c1+c2)/2));
	}
}