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 whatever //do not write package name here */

import java.io.*;
import java.util.*;
import java.lang.*;



public class GFG {
	public static void main (String[] args) {
		//System.out.println("GfG!");
		
		Scanner sc=new Scanner(System.in);
		
		int n=sc.nextInt();
		int m=sc.nextInt();
		char[][] a=new char[n+1][m+1];
		String s="";
		int r=0,c=0,flag=0;
		for(int i=1;i<=n;i++)
		{
		    s=sc.next();
		    
		    /*for(int j=1;j<=m;j++)
		    {
		        char c=sc.next().charAt(0);
		        a[i][j]=c;
		    }*/
		    if(s.contains("B"))
		    {
		        c=s.indexOf("B")+1;
		        r=i;
		        break;
		    }
		    
		}
		//System.out.println(r+" "+c);
		//System.out.println(s);
		int ctr=1;
		for(int i=c;i<s.length();i++)
		{
		    if(s.substring(i,i+1).contains("B"))
		    {
		        ctr++;
		    }
		    else
		    {
		        break;
		    }
		}
		//System.out.println(ctr);
		/*for(int i=1;i<=n;i++)
		{
		    //String s=sc.next();
		    
		    for(int j=1;j<=m;j++)
		    {
		        if(a[i][j]=='B')
		        {
		            r=i;
		            c=j;
		            if(flag==0)
		            {
		                flag=j;   
		            }
		        }
		    }
		    if(r!=0)
		    break;
		}*/
		
		flag=ctr/2;
		r=r+flag;
		c=c+flag;
		System.out.println(r+" "+c);
	}
}