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.io.PrintWriter;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.Scanner;

public class A1028 {
    static Scanner in= new Scanner(System.in);
    static PrintWriter out= new PrintWriter(System.out);
    private static final int N = 120;
    static int x1, y1,x2, y2, x, y, width, height, n, m;
    static LinkedList <LinkedHashMap<Integer, Integer>> square= new LinkedList <>();
    static String[] square1= new String[120];
    public static void main(String[] args){
        boolean first= true;
        width= height= 0;
        n= in.nextInt();
        m= in.nextInt();
        for(int i=0 ; i<n ;i++){
            square1[i]= in.next();
        }
        for(int i=0 ; i<n ;i++){
            for(int j=0; j<m; j++){
                if(square1[i].charAt(j) == 'B'){
                    if(first) {
                        x1= j+1;
                        y1= i+1;
                        first= false;
                    }
                    height= (i+2) -  y1;
                    width=Math.max ((j+2 -  x1), width);
                }
            }
        }
        x2= x1+width-1;
        y2= y1+height-1;
        x= (x1 + x2) /2;
        y= (y1 + y2) / 2;
        //System.out.println(x1+""+x2);
        out.println(y+" "+x);
        out.flush();
    }
}
