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.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.Scanner;
import java.util.StringTokenizer;
import java.util.Arrays;
import java.util.*;
import java.lang.*;
import java.awt.Font;
public class Solution
{
	static 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;
		}
	}
	public static void main(String[] args){
		FastReader sc=new FastReader();
		int n=sc.nextInt(),m=sc.nextInt(),i,j,counted=0,count=0,x=-1,y=-1;
		String s[]=new String[n];
		for(i=0;i<n;i++){
			s[i]=sc.next();
		}
		for(i=0;i<n;i++){
			if(counted==1) continue;
			for(j=0;j<m;j++){
				if(s[i].charAt(j)=='B'){
					count++;
					counted=1;
					if(x==-1&&y==-1){
						x=i;y=j;
					}
				}
			}
		}
		System.out.println((x+count/2+1)+" "+(y+count/2+1));
	}
}