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.*;

public class A {
    String fileName = "";

    public void solve() throws IOException {
        int n = nextInt();
        int m = nextInt();
        int x1 = n, y1 = m, x2 = -1, y2 = -1;
        for (int i = 0; i < n; i++) {
            String tmp = nextToken();
            for (int j = 0; j < m; j++) {
                if (tmp.charAt(j) == 'W')
                    continue;
                x1 = Math.min(x1, i);
                y1 = Math.min(y1, j);
                x2 = Math.max(x2, i);
                y2 = Math.max(y2, j);
            }
        }
        int ansI = (x2 + x1) / 2;
        int ansJ = (y2 + y1) / 2;
        out.print(ansI + 1);
        out.print(' ');
        out.print(ansJ + 1);
    }

    public void run() throws IOException {
        br = new BufferedReader(new InputStreamReader(System.in));
        out = new PrintWriter(System.out);
        solve();
        br.close();
        out.close();
    }

    BufferedReader br;
    StringTokenizer in;
    PrintWriter out;

    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 double nextDouble() throws IOException {
        return Double.parseDouble(nextToken());
    }

    public long nextLong() throws IOException {
        return Long.parseLong(nextToken());
    }

    public static void main(String... args) throws IOException {
        new A().run();
    }
}
