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 Solution {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		int m = scan.nextInt();
		scan.nextLine();
		int r = 0;
		int c = 0;
		boolean firstLine = false;
		for(int i = 0; i < n; i++) {
			String s = scan.nextLine();
			if(!firstLine && s.contains("B")) {
				firstLine = true;
				int first = s.indexOf("B");
				int last = s.lastIndexOf("B");
				c = 1 + ((first + last)/2);
				r = i + 1 + (((last-first)/2));
			}
		}
		System.out.println(r + " " + c);
	}
}
