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.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.*;
import java.util.stream.Collectors;
import java.util.stream.IntStream;


public class Main {

    static int n, m;
    static String[] x;


    public static void main(String[] args) {
        PrintWriter pw = new PrintWriter(System.out);
        Input(new FastReader(), pw);
        Solve(pw);
        pw.flush();
        pw.close();
    }

    public static void Solve(PrintWriter pw) {


    }


    public static void Input(FastReader input, PrintWriter pw) {
        n = input.nextInt();
        m = input.nextInt();
        x = new String[n];
        IntStream.range(0, n).forEach(i -> x[i] = input.nextLine());
        int saveI = -1, saveJ = -1;
        int i = 0;
        int numB = 0;
        while (i < n) {
            int j = 0;
            while (j < m) {
                if (x[i].charAt(j) == 'B') {
                    numB++;
                }
                ++j;
            }
            i++;
        }
        i = 0;
        numB = (int) Math.ceil(numB / 2f);
        while (i < n) {
            int j = 0;
            while (j < m) {
                if (x[i].charAt(j) == 'B' && numB > 0) {
                    numB--;
                    saveI = i + 1;
                    saveJ = j+ 1;
                }
                ++j;
            }
            i++;
        }

        pw.println(saveI + " " + saveJ);
    }

    public static class FastReader {

        BufferedReader br;
        StringTokenizer st;

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

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

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

        long nextLong() {
            return Long.parseLong(next());
        }

        double nextDouble() {
            return Double.parseDouble(next());
        }

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

        char nextChar() {
            return next().charAt(0);
        }

        String[] nextStringArray() {
            String[] str = null;
            try {
                str = this.br.readLine().trim().split(" ");
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }

        int[] nextIntArray() {
            String[] data = nextStringArray();
            int[] a = new int[data.length];

            for (int i = 0; i < a.length; i++) {
                a[i] = Integer.parseInt(data[i]);
            }

            return a;
        }

        Integer[] nextIntegerArray() {
            String[] data = nextStringArray();
            Integer[] a = new Integer[data.length];

            for (int i = 0; i < a.length; i++) {
                a[i] = Integer.parseInt(data[i]);
            }

            return a;
        }

        long[] nextLongArray() {
            String[] data = nextStringArray();
            long[] a = new long[data.length];

            for (int i = 0; i < a.length; i++) {
                a[i] = Long.parseLong(data[i]);
            }

            return a;
        }

        public boolean hasNext() throws IOException {
            if (st != null && st.hasMoreTokens()) {
                return true;
            }
            String s = br.readLine();
            if (s == null || s.isEmpty()) {
                return false;
            }
            st = new StringTokenizer(s);
            return true;
        }

    }


}


