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.Scanner;
import java.util.*;

public class Solution {

	public static void main(String[] args) {
		boolean debug = false;

		Scanner input = new Scanner(System.in);

		int n = input.nextInt();

		int m = input.nextInt();

		String[] lin = new String[n];

		for(int i=0; i < n; i++) {
			lin[i] = input.next();
		}

		int x = -1;
		int y = -1;

		boolean foundB = false;
		for(int r=0; r < n; r++) {
			for(int c=0; c < m; c++) {
				if (lin[r].charAt(c) == 'B') {
					x = r;
					y = c;
					foundB = true;
					break;
				}
			}
			if (foundB) break;
		}

		int count = 0;
		for(int i=x; i < n; i++) {
			if (lin[i].charAt(y) == 'B') {
				count++;
			} else {
				break;
			}
		}

		//System.out.println(count);
		int xVal = x + (count/2) + 1;
		int yVal = y + (count/2) + 1;

		if (count == 1) {
			xVal = x + 1;
			yVal = y + 1;
		}

		System.out.println(xVal + " " + yVal);

	}


}