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.Scanner;
public class squ
{
    public static void main(String args[])
    {
        Scanner sc=new Scanner(System.in);
        int n=sc.nextInt();
        int m=sc.nextInt();
        int r1=0,r2=0,c1=0,c2=0,f=0;
        for(int i=1;i<=n;i++)
        {
            String S=sc.next();
            if(f==0)
            {
                if(S.indexOf('B')!=-1)
                {c1=S.indexOf('B')+1;c2=S.lastIndexOf('B')+1;r1=i;r2=i;f=1;}
            }
            else if((f==1)&&(S.indexOf('B')!=-1)) 
                r2=i;
        }
        System.out.println((r1+((r2-r1)/2))+" "+(c1+((c2-c1)/2)));
    }
}
