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.*;

public class A1028 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner scan = new Scanner(System.in);

		boolean foundFirst = false;
		int rFirst = -1;
		int cFirst = -1;
		int rLast = -1;
		int cLast = -1;
		
		int rows = scan.nextInt();
		int cols = scan.nextInt();
		for (int i = 0; i < rows; i++) {
			String word = scan.next();
			if (!foundFirst) {
				int index = word.indexOf('B');
				if (index != -1) {
					foundFirst = true;
					rFirst = i;
					cFirst = index;
				}
			}
			
			int index = word.lastIndexOf('B');
			if (index != -1) {
				rLast = i;
				cLast = index;
			}
		}
		
		int row = (rFirst + rLast) / 2 + 1;
		int col = (cFirst + cLast) / 2 + 1;
		
		System.out.print(row + " " + col);
	}

}
