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.*;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.*;
import java.util.StringTokenizer;
 
public class Main
{
    
    public static void main(String[] args)
    {
        Scanner in=new Scanner(System.in);
        int i,j,r1=0,r2=0,c1=0,c2=0,f=0;
                int n=in.nextInt();
        int m=in.nextInt();
        String a[]=new String[n];
      for(i=0;i<n;++i)
      { 
          a[i]=in.next();
         // System.out.println(a[i]);
          for(j=0;j<m;++j)
          { 
              char c=a[i].charAt(j);
            if(c=='B')
              {
                  if(f==0)
                  {
                      f=1;
                      r1=i;
                      r2=i;
                      c1=j;
                      c2=j;
                  }
                   else
                  {
                      r2=i;
                      c2=j;                      
                  }
              }
            
          }
      }
        //System.out.println(r1+" "+c1);
         //System.out.println(r2+" "+c2);
       int r3=((r1+r2)/2)+1;
        int c3=((c1+c2)/2)+1;
        System.out.println(r3+" "+c3);
    }
    
}