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 Program1 {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int n = in.nextInt(), m = Integer.valueOf(in.nextLine().substring(1));
        int x = 0, y = 0;
        boolean isTrue = false;
        for (int i = 0; i < n; i++) {
            String s = in.nextLine();
            if(!isTrue && s.contains("B")){
                isTrue = true;
                int start = s.indexOf("B") + 1, finish = s.lastIndexOf("B") + 1;
                x = (finish + start) / 2;
                int length = finish - start + 1;
                y = i + 1 + length / 2;
            }
        }
        System.out.println(y + " " + x);
    }
}
