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 Exer1028A {
	static class Coor{
		int x;
		int y;
		Coor(int x, int y){
			this.x = x;
			this.y = y;
		}
	}
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int n = in.nextInt();
		int m = in.nextInt();
		
		Coor firstAppear = null;
		int length = 0;
		boolean flag = false;
		outter: for(int i = 0; i < n;++i) {
			String line = in.next();
			//System.out.println(line);
			for(int j = 0; j < m;++j) {
				if(line.charAt(j) == 'B'){
					firstAppear = (firstAppear == null) ?new Coor(i, j) : firstAppear;
					length++;
					flag = true;
				} else if(flag) {
					break outter;
				}
			}
			if(flag) {
				break;
			}
		}
		in.close();
		//System.out.println(length);
		System.out.println(firstAppear.x + length/2 + 1 + " " + (firstAppear.y + length/2 + 1));
	}
}
