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.*;

public class InputReader {
	static BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
	int[][] pairs;
	public static void main(String[] args) throws IOException {
		InputReader e = new InputReader();
		e.init();
	}


	private void init() throws NumberFormatException, IOException {
		String initDat = reader.readLine();
		String ar[] = initDat.split(" ");
		int w = Integer.parseInt(ar[1]);
		char c = 'A';
		int i = 0;
		int j = 0;
		while(c != 'B'){
			i++;
			j = 0;
			while(j <= w+1 && c != 'B'){
				c = (char)reader.read();
				j++;
			}
		}
		int k = j;
		while(c == 'B') {
			c = (char) reader.read();
			k++;
		}

		System.out.println((2*i+(k-j))/2+" "+(k+j)/2);
	}
}





