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.*;
import static java.lang.Math.*;

public class A {
    public static void main(String[] args) {
        Scanner input = new Scanner();
        StringBuilder output = new StringBuilder();

        int n = input.nextInt();
        int m = input.nextInt();
        char[][] grid = new char[n][m];

        for (int i = 0; i < n; i++) {
            grid[i] = input.next().toCharArray();
        }
        int startX = 2*n, endX = 0;
        int startY = 2*m, endY = 0;
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < m; j++) {
                if (grid[i][j] == 'B') {
                    startX = min(startX, i);
                    endX = max(startX, i);
                    startY = min(startY, j);
                    endY = max(startY, j);
                }
            }
        }

        System.out.println((startX + endX + 2) / 2 + " " + (startY + endY + 2) / 2);
    }

    private static class Scanner {
        BufferedReader br; StringTokenizer st;
        public Scanner(Reader in) { br = new BufferedReader(in); }
        public Scanner() { this(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 readNextLine() {
            String str = "";
            try { str = br.readLine();
            } catch (IOException e) { e.printStackTrace(); }
            return str; }
        int[] readIntArray(int n) {
            int[] a = new int[n];
            for (int idx = 0; idx < n; idx++) { a[idx] = nextInt(); }
            return a; }
        long[] readLongArray(int n) {
            long[] a = new long[n];
            for (int idx = 0; idx < n; idx++) { a[idx] = nextLong(); }
            return a; }
    } // end Scanner
}
