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 Main {
	public static void main(String [] args){
		Scanner scanner = new Scanner(System.in);
		int n = scanner.nextInt();
		int m = scanner.nextInt();
		String s;
		char [][]mat = new char[n][m];
		int row = -1, col = -1, crows = -1;
		for(int i = 0; i < n; i++){
			s = scanner.next();
			for(int j = 0; j < s.length(); j++){
				mat[i][j] = s.charAt(j);
			}
		}
		
		for(int i = 0; i < n; i++){
			for(int j = 0; j < m; j++){
				if(mat[i][j] == 'B'){
					crows++;
					if(col < 0){
						col = j;
					}
					
				}
			}
			
			if(crows > -1){
				row = i;
				break;
			}
		}
		
		col++;
		row++;
		
		int r = ((row + crows) + row) / 2;
		int c = ((col + crows) + col) / 2;
		
		System.out.println(r + " " + c);
	}
}
