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 {
    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        //BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(System.out));
        StringTokenizer st = new StringTokenizer(reader.readLine());
        int n = Integer.parseInt(st.nextToken());
        int m = Integer.parseInt(st.nextToken());

        int l = -1;
        int r = -1;
        int u = -1;
        int d = -1;
        for (int i = 0; i < n; i++) {
            String line = reader.readLine();
            for (int j = 0; j < m; j++) {
                if (line.charAt(j) == 'B') {
                    if (l == -1){
                        l = j;
                    }
                    if (r == -1 || r < j) {
                        r = j;
                    }
                    if (u == -1) {
                        u = i;
                    }
                    if (d == -1 || d < j) {
                        d = i;
                    }
                }
            }
        }

        int side = r - l + 1;
        System.out.println((u + side / 2 + 1) + " " + (l + side / 2 + 1));
    }
}