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.lang.reflect.Array;
import java.util.*;
import java.io.*;

public class C {
    FastScanner in;
    PrintWriter out;

    public static void main(String[] args) {
        new C().run();
    }

    void solve() throws IOException {
        int n = in.nextInt();
        int m = in.nextInt();
        char[][] s = new char[n][];
        Arrays.setAll(s, i -> in.next().toCharArray());
        int mi = n, mj = m, mai = 0, maj = 0;
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < m; j++) {
                if (s[i][j] == 'B') {
                    mi = Math.min(mi, i);
                    mj = Math.min(mj, j);
                    mai = Math.max(mai, i);
                    maj = Math.max(maj, j);
                }
            }
        }
//        System.out.println(mi + " " + mai + " " + mj + " " + maj);
        out.println((1 + (mi + mai) / 2) + " " + (1 + (mj + maj) / 2));

    }

    void run() {
        try {
            in = new FastScanner(System.in);
            out = new PrintWriter(System.out);
            solve();

            out.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    class FastScanner {
        BufferedReader br;
        StringTokenizer st;

        FastScanner(InputStream is) {
            br = new BufferedReader(new InputStreamReader(is));
        }

        String next() {
            while (st == null || !st.hasMoreTokens()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }
    }
}
