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 Main {
    public static void main(String[] arg) {
        Scanner scan = new Scanner(System.in);


        int rowStart = Integer.MAX_VALUE;
        int rowEnd = Integer.MIN_VALUE;
        int colStart = Integer.MAX_VALUE;
        int colEnd = Integer.MIN_VALUE;

        int n = scan.nextInt();
        int m = scan.nextInt();

        for(int i = 0; i < n; i++){
            char[] chs = scan.next().toCharArray();

            for(int j = 0; j < m; j++){
                if(chs[j] == 'B'){
                    rowStart = Math.min(i + 1, rowStart);
                    rowEnd = Math.max(i + 1, rowEnd);
                    colStart = Math.min(j + 1, colStart);
                    colEnd = Math.max(j + 1, colEnd);
                }
            }
        }

        System.out.print((rowEnd + rowStart) / 2 + " " + (colEnd + colStart) / 2);
    }
}