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.*;
public class Main {
    static Scanner sc=new Scanner(System.in);
	
    public static void main(String[] args) {
		while(sc.hasNext()){
			int n=sc.nextInt();
			int m=sc.nextInt();
			int indsi=0,indei=0,indsj=0,indej=0;
			boolean flag=false;
			for(int i=1;i<=n;i++){
				String str="0"+sc.next();
				for(int j=1;j<=m;j++){
					if(str.charAt(j)=='B' && flag==false){
				    	indsi=i;
				    	indsj=j;
				    	flag=true;
				    }
				    if(str.charAt(j)=='B' && flag==true){
				    	indei=i;
				    	indej=j;
				    }
				}		
			}
			System.out.println((indsi+indei)/2+" "+(indsj+indej)/2);
		}	
	}
}