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.*;
import java.math.BigInteger;

public class Solution{ 
	
		
	 
	 public static void main(String[] args) { 
	     
	     Scanner in = new Scanner(System.in);
	     StringBuilder sb=new StringBuilder();
	     
	     int n,m,i,j,sum_i=0,sum_j=0,num=0;
	     String s;
	     
	     n=Integer.parseInt(in.next());
	     m=Integer.parseInt(in.next());
	     
	     for(i=1;i<=n;i++){
	    	 s=in.next();
	    	 for(j=1;j<=m;j++){
	    		 if(s.charAt(j-1)=='B'){
	    			 sum_i+=i;
	    			 sum_j+=j;
	    			 num++;
	    		 }
	    	 }
	     }
	     
	     System.out.println((sum_i/num)+" "+(sum_j/num));
	     
	     
	     
	 }
}