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.*;

/**
 * Created by Jason Qiao on 8/28/2018.
 */
public class findSquare {
    public static void main(String[] args) {
        MyScanner sc = new MyScanner();
        out = new PrintWriter(new BufferedOutputStream(System.out));

        StringTokenizer st = new StringTokenizer(sc.nextLine());
        int n = Integer.parseInt(st.nextToken());
        int m = Integer.parseInt(st.nextToken());

        int i = 0;
        int j = 0;
        int end = 0;
        boolean flag = false;
        for (i = 0; i < n; i++) {
            String s = sc.nextLine();
            for (j = 0; j < s.length(); j++) {
                if (s.charAt(j) == 'B') {
                    flag = true;
                    for (end = s.length()-1; end > 0; end--) {
                        if (s.charAt(end) == 'B') {
                            break;
                        }
                    }
                    break;
                }
            }
            if (flag) {
                break;
            }
        }

        int length = end-j+1;

        System.out.println((i+1+(length-1)/2) + " " + (j+1+(length-1)/2));

        out.close();
    }



    public static PrintWriter out;

    public static class MyScanner {
        BufferedReader br;

        public MyScanner() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String nextLine(){
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }

    }
}
