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.math.BigInteger;
import java.util.*;

import static java.lang.Math.*;

public class Main {

    BufferedReader br;
    StringTokenizer in;
    PrintWriter pw;



    public void solve() throws IOException {
        int n = nextInt();
        int m = nextInt();
        for (int i = 0; i < n; i++) {
            String s = nextToken();
            for (int j = 0; j < m; j++) {
                char c = s.charAt(j);
                if (c == 'B') {
                    int f = j;
                    int l = 0;
                    while (j < m && s.charAt(j) == 'B') {
                        l++;
                        j++;
                    }
                    pw.print(""  + (i + 1 + l / 2) + " " + (j - l + 1 + l/2));
                    return;
                }
            }
        }
    }

    long gcd(long a, long b) {
        if (b == 0)
            return a;
        else
            return gcd(b, a % b);
    }


    public void run() {
        try {
            br = new BufferedReader(new InputStreamReader(System.in));
//            br = new BufferedReader(new FileReader("input.txt"));
            pw = new PrintWriter(new OutputStreamWriter(System.out));
//            pw = new PrintWriter(new FileWriter("output.txt"));
            solve();
            pw.close();
        } catch (IOException e) {
            e.printStackTrace();
            System.exit(1);
        }
    }

    public String nextToken() throws IOException {
        while (in == null || !in.hasMoreTokens()) {
            in = new StringTokenizer(br.readLine());
        }
        return in.nextToken();
    }

    public int nextInt() throws IOException {
        return Integer.parseInt(nextToken());
    }

    public static void main(String[] args) throws IOException {
        Locale.setDefault(Locale.US);
        new Main().run();
    }
}