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 test {
	public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        int n=s.nextInt();
        int m=s.nextInt();
        int count=0;
        int row=0;
        int column=0;
        boolean ans=true;
        String[] str=new String[n];
        for(int i=0;i<n;i++)
         str[i]=s.next();
         for(int i=0;i<n;i++)
        {
          if(str[i].contains("B"))
          {
               count++;
               if(ans)
               {
                  ans=false;
                  row=i+1;
                  column=str[i].indexOf("B")+1;
               }
          }
        } 
        row=row+count/2;
          column=column+count/2;
          System.out.println(row+" "+column);
 }
}  