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;

public class A1028_Find_Square {
	
	public static void main(String[] args){
		
		Scanner input = new Scanner(System.in);
		
		int n = input.nextInt();
		int m = input.nextInt();
		
		char[][] str = new char[n][];
		
		for(int i = 0; i < n; i++){
			str[i] = input.next().toCharArray();
		}
		
		int minX = Integer.MAX_VALUE, maxX = Integer.MIN_VALUE, minY = Integer.MAX_VALUE, maxY = Integer.MIN_VALUE;
		
		
		for(int i = 0; i < n; i++)
			for(int j = 0; j < m; j++){
				if(str[i][j] == 'B'){
					minX = Math.min(minX, i);
					minY = Math.min(minY, j);
					maxX = Math.max(maxX, i);
					maxY = Math.max(maxY, j);
				}
			}
		
		System.out.println(((minX + maxX)/2 + 1) + " " + ((minY + maxY)/2 + 1));
		
		input.close();
		
	}

}