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.util.Arrays;
public class Main
{
    public static void main(String args[])
    {
        Scanner sc=new Scanner(System.in);
        int L1=-1,R1=-1,L2=-1,R2=-1;
        int n=sc.nextInt();
        int m=sc.nextInt();
        String[] table =new String[n];
        for(int i=0;i<n;i++)
        {
            table[i]=sc.next();
        }
        for(int i=0;i<n;i++)
        {
            for(int j=0;j<m;j++)
            {
                if(table[i].charAt(j)=='B')
                {
                    if(L1==-1)
                    {
                        L2=i;
                        L1=i;
                        R2=j;
                        R1=j;
                    }
                    else if(i>L2 && j>R2)
                    {
                        L2=i;
                        R2=j;
                    }
                }
            }
        }
        System.out.println((L1+L2+2)/2 +" "+(R1+R2+2)/2);
        
    }
}