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.*;
import java.util.*;
//import java.util.stream.*;;
//import java.math.*;

public class Main {

    public static boolean vowel(char c) {
        String v = "aeiouy";
        return v.contains(Character.toString(c));
    }

    public static void main(String[] args) throws IOException {

        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        Scanner sc = new Scanner(System.in);
        String[] a = br.readLine().split(" ");
        int n = Integer.parseInt(a[0]);
        int m = Integer.parseInt(a[1]);
        int row_start = -1, row_end = 0, col_start = Integer.MAX_VALUE, col_end = Integer.MIN_VALUE;
        for (int i = 0; i < n; i++) {
            char[] s = br.readLine().toCharArray();
            for (int j = 0; j < s.length; j++) {
                if (s[j] == 'B') {
                    if (row_start == -1) {
                        row_start = i + 1;
                    }
                    row_end = i + 1;
                    if (j < col_start) {
                        col_start = j + 1;
                    }
                    if (j > col_end) {
                        col_end = j + 1;
                    }
                }
            }
        }
        System.out.println((row_start + row_end) / 2 + " " + (col_start + col_end) / 2);
        bw.flush();
    }
}
