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
// practice with kaiboy
import java.io.*;
import java.util.*;

public class CF1028A extends PrintWriter {
	CF1028A() { super(System.out, true); }
	Scanner sc = new Scanner(System.in);
	public static void main(String[] $) {
		CF1028A o = new CF1028A(); o.main(); o.flush();
	}

	void main() {
		int n = sc.nextInt();
		int m = sc.nextInt();
		int i_ = 0, j_ = 0, k = 0;
		for (int i = 0; i < n; i++) {
			char[] cc = sc.next().toCharArray();
			for (int j = 0; j < m; j++)
				if (cc[j] == 'B') {
					i_ += i;
					j_ += j;
					k++;
				}
		}
		i_ /= k;
		j_ /= k;
		println((i_ + 1) + " " + (j_ + 1));
	}
}
