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.util.*;
 
public class Birthday
{
	public static void main(String[] args) throws IOException 
	{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringTokenizer st = new StringTokenizer(br.readLine());
		
		int r,c , firstx=0, firsty=0, lastx=0, lasty=0, midx, midy;
		r = Integer.parseInt(st.nextToken());
		c = Integer.parseInt(st.nextToken());
		String[] rows = new String[r];
		
		for(int i=0; i<r; i++)
		{
		      st = new StringTokenizer(br.readLine());
		      rows[i] = st.nextToken();
		      if(rows[i].contains("B") == true)
		      {
		            for(int j=0; j<c; j++)
      		      {
      		            if(rows[i].charAt(j) == 'B')
      		            {
      		                  
      		                  if(firstx == 0 && firsty == 0 && (i > firsty || j > firstx))
      		                  {
      		                        firstx = j; 
      		                        firsty = i;
      		                        lastx = j; 
      		                        lasty = i;
      		                  }
      		                  else
      		                  {
      		                        lastx = j; 
      		                        lasty = i;
      		                  }
      		            }
      		      }
		      }
		}
		midx = (firstx + lastx)/2 + 1;
		midy = (firsty + lasty)/2 + 1;
		
		System.out.println(midy + " " + midx);
	}
}