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.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.regex.*;

public class cf {
    public static void main(String[] args) {
        Scanner in=new Scanner(System.in);
        int n=in.nextInt();
        int m=in.nextInt();
        String waste=in.nextLine();
        char[][] a=new char[n][m];
        for(int i=0;i<n;i++)
        {
            String s=in.nextLine();
            a[i]=s.toCharArray();
        }
        int t=0,l=0,b=0,r=0;
        for(int j=0;j<n;j++)
        for(int i=0;i<m;i++)
            if(a[j][i]=='B')
            {
                t=j;
                l=i;
            }
        for(int j=n-1;j>=0;j--)
        for(int i=m-1;i>=0;i--)
            if(a[j][i]=='B')
            {
                b=j;
                r=i;
            }
        System.out.println(((t+b+2)/2)+" "+((l+r+2)/2));
    }
}
