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
// https://codeforces.com/problemset/problem/1028/A
import java.util.Scanner;
public class p_37 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();

        String s[] = new String[a];
        for (int i = 0; i < a; i++) {
            s[i] = sc.next();
        }

        int m = 0;
        int n = 0;
        int c = 0;
        int m1 = 0;
        for (int i = 0; i < a; i++) {
            if (f_1(s[i]) != 0) {
                m = f_1(s[i]);
                n = f_2(s[i]);
                m1 = i;
                break;
            }
        }

        // for (int i = m; i < a; i++) {
        //     if (s[i].charAt(n) == 'B') {
        //         c++;
        //     } else {
        //         break;
        //     }
        // }

        int last = n + m - 1;
        int last_row = m1 + m - 1;
        int cols = (last + n) / 2;
        int row = (m1 + last_row)/2 ;
        // System.out.println(m);
        // System.out.println((m / 2));
        // System.out.println((m / 2) + 1);
        // System.out.println(cols);
        // System.out.println(row);
        // System.out.println(m);
        // System.out.println(n);
        // System.out.println(last);
        System.out.println((row + 1) + " " + (cols + 1));

    }
    
    public static int f_1(String a) {
        int count = 0;
        for (int i = 0; i < a.length(); i++) {
            if (a.charAt(i) == 'B') {
                count++;
            }
        }
        return count;
    }

    public static int f_2(String a) {
        int count = 0;
        for (int i = 0; i < a.length(); i++) {
            if (a.charAt(i) == 'B') {
                count = i;
                break;
            }
        }

        return count;

    }
}
