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.*;
import java.io.*;
import java.math.*;
public class hi{
   
   
   
    public static void main(String[] args)  {
        
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int c=0,r=0;
        int m = sc.nextInt();
        String[] s = new String[n];
        for(int i=0;i<n;i++) s[i] = sc.next();
        int nb = 0;
        for(int i=0;i<n;i++){
            c = s[i].indexOf('B');
            if(c!=-1){
                for(int j=c;j<m;j++){
                    if(s[i].charAt(j)=='B'){
                        nb++;
                        
                    }
                    else break;
                }
                c += 1+nb/2;
                r = i+1;
                break;
            }
        }
        nb = 1;
        for(int i=r;i<n;i++){
            if(s[i].charAt(c-1)=='B') nb++;
            else break;
        }
        r += nb/2;
        System.out.println(r+" "+c);
        
    }
    
}