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.*;

public class Solution {
    public static void main(String[] args) {
        try {
            Scanner in = new Scanner(System.in);
            int n = in.nextInt();
            int m = in.nextInt();
            
            String[] str = new String[n];
            int len = 0;
            int row = 0;
            int col = 0;
            for(int i=0;i<n;i++) {
                str[i] = in.next();
                if(len == 0)
                for(int j=0;j<str[i].length();j++) {
                    if(str[i].charAt(j) == 'B') {
                        row = i;
                        col = j;
                        len = 1;
                        break;
                    }
                    //if(len > 0) break;
                }
            }
            //System.out.println(col+" "+row+" "+len+" "+str[row]);
            len--;
            int j=col;
            while(j<m && str[row].charAt(j) == 'B') {
                len++; j++;
            }
            //System.out.print("here");
            System.out.print(row+1+len/2+" ");
            System.out.print(col+1+len/2);
        } catch(Exception e) {
            
        }
    }
}