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 A {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        sc.nextLine();
        String[] s = new String[n];
        for (int i = 0; i < n; i++) {
            s[i] = sc.nextLine();
        }
        int r = 0, c = 0;
        for (int i = 0; i < n; i++) {
            boolean find = false;
            int left = 0, right = 0;
            for (int j = 0; j < m; j++) {
                if (!find && s[i].charAt(j) == 'B') {
                    left = j + 1;
                    right = j + 1;
                    find = true;
                }
                if (find && s[i].charAt(j) == 'B') {
                    right = j + 1;
                }
            }
            if (find) {
                if (left == right) {
                    r = i + 1;
                    c = right;
                } else {
                    int add = (right - left) / 2;
                    r = (i + 1) + add;
                    c = left + add;
                }
                break;
            }
        }
        System.out.println(r + " " + c);
    }
}