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.util.Arrays;

/**
 * Created by Arihant Jain on 8/27/2018.
 */
public class findSquare {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String[] out = br.readLine().split(" ");
        int n = Integer.parseInt(out[0]);
        int m = Integer.parseInt(out[1]);
        int topLeftRow = 0;
        int topLeftColumn = 0;
        int bottomRightRow = 0;
        int bottomRightColumn = 0;
        boolean blackFound = false;
        for (int i = 0; i<n; i++) {
            String row = br.readLine();
            for (int j = 0; j<m; j++) {
                if (row.charAt(j)=='B') {
                    if (!blackFound) {
                        topLeftRow=i;
                        topLeftColumn=j;
                        blackFound=true;
                    }
                    bottomRightRow=i;
                    bottomRightColumn=j;
                }
            }
        }
        int centerRow = (topLeftRow+bottomRightRow)/2;
        int centerColumn = (topLeftColumn+bottomRightColumn)/2;
        System.out.println((centerRow+1)+" "+(centerColumn+1));
    }
}
