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.io.IOException;
import java.util.Scanner;

public class A1028 {
	public static void main(String[] args) throws IOException {
		Scanner in = new Scanner(System.in);
		
		int n = in.nextInt(), m = in.nextInt(), i, j, r = 0, c = 0, countBlack = 0;
		String s;
		boolean flagBlack = false;
		
		for(i = 0;  i < n; ++i) {
			s = in.next();
			if(flagBlack && s.indexOf('B') == -1)
				continue;
			if(s.indexOf('B') != -1 && !flagBlack) {
				c = (s.indexOf('B') + s.lastIndexOf('B') + 2) / 2;
				flagBlack = true;
			}
			if(flagBlack) {
				countBlack++;
				continue;
			}
			r++;
		}
		r += (countBlack + 1) / 2;
		
		System.out.println(r + " " + c);
	}
}
