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 codechef; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.Arrays;
import java.math.BigInteger;
 
/* Name of the class has to be "Main" only if the class is public. */
public class Main
{
     public static void main (String[] args) throws java.lang.Exception
     {
     	Scanner in =new Scanner(System.in);
		int l,p,n,h,k,r,j,x,y;
		String s="",st="";
		int t=1,i,m;
	     for(i=0;i<t;i++)
		{
		     n=in.nextInt();
		     m=in.nextInt();
		     char c[][]=new char[n][m];
		     for(j=0;j<n;j++)
		     {
     		     s=in.next();
     		     for(k=0;k<m;k++)
     		          c[j][k]=s.charAt(k);
		     }
		     h=x=y=0;
		     for(j=0;j<n;j++)
		          for(k=0;k<m;k++)
		               if(c[j][k]=='B')
		               {
		                    x+=j+1;
		                    y+=k+1;
		                    h++;
		               }
		     System.out.println((x/h)+" "+(y/h));
		}
     }
}