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
/*
 * No package must be added here because some Online Judges don't support it
 * please remove, if any.
 * 
 */
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.*;

/*
 * Only classes with 'Main' name are accepted in CodeChef and some other online judges
 */
public class Main {

	
	public static String output = "";

	public static void main(String[] args) {

		
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		int m , n;

		
		try {	
			
			String[] s = br.readLine().split(" ");

			m = Integer.parseInt(s[0]);
			n = Integer.parseInt(s[1]);

			for(int i = 1; i <= m; i++){
				String line = br.readLine();
				int start = line.indexOf('B');
				int end = line.lastIndexOf('B');

				int side = end - start;
				

				if(start > -1){
					System.out.println((i + (side / 2)) + " " + (start + 1 + (side / 2)));
					break;
				}
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
		// Print the final output
	}

}
