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.*;
import java.io.*;
public class edu_1029_B
{
    public static void main(String args[])throws IOException
    {
        Scanner ob=new Scanner(System.in);
        int n=ob.nextInt();
        int m=ob.nextInt();
        char a[][]=new char[n][m];
        for(int i=0;i<n;i++)
        {
            String s=ob.next();
            a[i]=s.toCharArray();
        }
        int l=0;
        int ans=0;
        for(int i=0;i<n;i++)
        {
            for(int j=0;j<m;j++)
            {
                if(a[i][j]=='B')
                {
                    for(int ii=i;ii<n;ii++)
                    {
                        for(int jj=j;jj<m;jj++)
                        {
                            if(a[ii][jj]=='B')
                                ans++;
                            else
                                break;
                        }
                        if(ans!=0)
                        {
                            System.out.println((1+i+ans/2)+" "+(1+j+ans/2));
                            break;
                        }
                    }
                    l=1;
                    break;
                }
            }
            if(l==1)
                break;
        }

    }
}