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.util.*;


public class JavaApplication8 {

    static int[] get(int n,int m,String[] s){
        int[] a = new int[2] ;
        int x1=-1,y1=-1,x2=-1,y2=-1 ;
        
        for(int i=0;i<n;i++ ){
            boolean flag = false ;
            for(int j=0;j<m;j++){
                if(s[i].charAt(j) == 'B'){
                    flag = true ;
                    x1 = i;
                    y1 = j;
                    
                    break; 
                }
            }
            
            if(flag == true ){
                //
                break ;
            }
        }
        
        y2 = y1 ; 
        while(y2+1 < m && s[x1].charAt(y2+1) == 'B'){
            y2 ++ ;
        }
            
         a[0] = x1 + (y2-y1) / 2 + 1 ;   
         a[1] = y1 + (y2-y1) / 2 + 1 ; 
           
         return a ;
    }
    
    public static void main(String[] args) {
       Scanner in = new Scanner(System.in) ;
       int n = in.nextInt() ;
       int m = in.nextInt() ;
       String[]  s = new String[n] ;
       
       for(int i=0;i<n;i++){
           s[i] = in.next() ;
       }
       
       int[] a = get(n,m,s) ;
       System.out.println(a[0] + " " + a[1]) ;
    }
}