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 _0325FindSquare {

	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		int n=sc.nextInt();
		int m=sc.nextInt();
		sc.nextLine();
		int start=-1;
		int downstart=0;
		int len=0;
		boolean flag=true;
		for(int i=0;i<n;i++) {
			String temp=sc.nextLine();
			if(temp.indexOf('B')!=-1 && flag) {
				downstart=i+1;
				for(int j=0;j<m;j++) {
					
					if(temp.charAt(j)=='B') {
						if( start==-1) {
							start=j+1;
							len++;
						//	System.out.println(start+" "+len);
					}
						else {
							len++;
						}
					}
				}
				flag=false;
		}
		}
		System.out.println((downstart+len/2) +" "+(start+len/2));
	}

}
