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.*;

/* Name of the class has to be "Main" only if the class is public. */
public class Solveda
{
	public static void main (String[] args) throws java.lang.Exception
	{
	 int i, start=-1, end=-1; String s;
	 Scanner sc= new Scanner(System.in);
	 int n= sc.nextInt();
	 int m= sc.nextInt();

	 for(i=0;i<n;i++){
	     s=sc.next();
	     if(s.indexOf('B')==-1)
	     continue;
	     else{
	         start=s.indexOf('B');
	         end=s.lastIndexOf('B');
	         System.out.println(i+1+(end-start)/2+" "+(start+1+(end-start)/2));
	         break;
	     }
	 }
	 if(start==-1)
	 System.out.println(-1+" "+-1);
	}
}
