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 codeforce {
    public static  void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        String[]a = new String[n];
        for (int i = 0; i < n; i++) {
            a[i] = sc.next();
        }
        int count = 0;
        int column = -1;
        int row = -1;
        for (int i = 0; i < n; i++) {
            if(a[i].contains("B")){
                column = i;
                break;
            }
        }
        int last = -1;
        for (int i = 0; i < m; i++) {
            if(a[column].charAt(i)=='B'){
                count++;
                last = i;
            }
        }

        System.out.print(column+(count/2+1)+" ");
        System.out.println(last+1-(count/2+1)+1);

    }
}
