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 problem5 {
    public static Scanner scan = new Scanner(System.in);
    public static void main(String[] args) {
        int n = scan.nextInt();
        int m = scan.nextInt();
        int indexy = -1;
        int indexx = -1;
        int k = 0;
        scan.nextLine();
        for (int i = 0; i < n; i++){
            String s = scan.nextLine();
            char arr[] = s.toCharArray();
            for (int j = 0; j < m; j++){
                if (arr[j] == 'B'){
                    if (k == 0){
                        indexy = j;
                    }
                    k++;
                }
            }
            if (k > 0){
                indexx = i;
                break;
            }
        }
        System.out.println((int)(indexx + (k + 1)/2) + " " + (int)(indexy + (k + 1)/2));
    }
}