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 a{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        int min_m = m + 10, min_n = n+10, max_n = -1, max_m = -1;
        for(int i = 0; i < n; ++i){
            String a = sc.next();
            for(int j = 0; j < m; ++j){
                if(a.charAt(j) =='B'){
                    min_m = Math.min(min_m,j+1);
                    min_n = Math.min(min_n,i+1);
                    max_m = Math.max(max_m,j+1);
                    max_n = Math.max(max_n,i+1);
                }
            }
        }
        System.out.println(((min_n+max_n)/2) + " " + ((min_m+max_m)/2));
    }
}