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 cf1028a {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int m = sc.nextInt();
		int rn = 9999; int rx = -99 ; int cn =9999; int cx=-99;
		for (int i=1;i<=n;i++){
			char[] cur = sc.next().toCharArray();
			for(int j=1;j<=m;j++){
				if (cur[j-1]=='B'){
					rx = Math.max(i,rx);
					cx = Math.max(j,cx);
					rn = Math.min(i,rn);
					cn = Math.min(j,cn);
				}
			}
		}
		if (rx==rn) {
			System.out.print(rx+" "+cx);
			return;
		}
		System.out.print( ((rx+rn)>>1) +" "+ ((cx+cn)>>1) );
		
	}
}
