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.*;

public class cextra35
{
    public static void main(String args[])
    {
        Scanner sc=new Scanner(System.in);
        int n=sc.nextInt();
        int m=sc.nextInt();
        int f1=0,f2=0,i,j=0,k,l=0;

        String s[]=new String[n];
        for(i=0;i<=n-1;i++)
            s[i]=sc.next();

        for(i=0;i<=n-1;i++)
        {
            for(j=0;j<=m-1;j++)
            {
                if(s[i].charAt(j)=='B')
                {
                   f1=1;
                   break;
                }

            }
            if(f1==1)break;
        }
        for(k=n-1;k>=0;k--)
        {
            for(l=m-1;l>=0;l--)
            {
                if(s[k].charAt(l)=='B')
                {
                    f2=1;
                    break;
                }

            }
            if(f2==1)break;
        }

        System.out.println(((i+k)/2+1)+" "+((j+l)/2+1));
    }
}