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
//package superior;
import java.io.*;
import java.util.*;

public class Tester {

	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		FastReader s=new FastReader();
		int n=s.nextInt();
		int m=s.nextInt();
		int l=0,r=0,c=0;
		String st[]=new String[n];
		for(int j=0;j<n;j++)
			st[j]=s.next();
		boolean f=false;
		for(int j=0;j<n;j++)
		{
			for(int k=0;k<m;k++)
			{
				if(st[j].charAt(k)=='B')
				{
					l=0;
					while(true)
					{
						r=j+l;
						c=k+l;
						if(r<n && c<m && st[r].charAt(c)=='B')
							l+=2;
						else
							break;
					}
					f=true;
					break;
				}
			}
			if(f==true)
				break;
		}
		r-=(l+1)/2;
		c-=(l+1)/2;
		System.out.println(r+" "+c);

}
}
class FastReader
{
    BufferedReader br;
    StringTokenizer st;

    public FastReader()
    {
        br = new BufferedReader(new
                 InputStreamReader(System.in));
    }

    String next()
    {
        while (st == null || !st.hasMoreElements())
        {
            try
            {
                st = new StringTokenizer(br.readLine());
            }
            catch (IOException  e)
            {
                e.printStackTrace();
            }
        }
        return st.nextToken();
    }

    int nextInt()
    {
        return Integer.parseInt(next());
    }

    long nextLong()
    {
        return Long.parseLong(next());
    }

    double nextDouble()
    {
        return Double.parseDouble(next());
    }

    String nextLine()
    {
        String str = "";
        try
        {
            str = br.readLine();
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
        return str;
    }
}