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.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
import java.io.BufferedReader; 

public class cf1 {

	/**
	 * @param args
	 */
	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		Reader.init(System.in);
		int n = Reader.nextInt();
		int m = Reader.nextInt();
		String[] ar = new String[n];
		for(int i=0; i<n; ++i)
		{
			ar[i] = Reader.next();
		}
		
		int rowi = -1;
		int coli = -1;
		for(int i=0; i<n; ++i)
		{
			for(int j=0; j<m; ++j)
			{
				if(ar[i].charAt(j)=='B')
				{
					rowi = i;
					coli = j;
					break;
				}
			}
		}
		
		int rowf = -1;
		int colf = -1;
		
		for(int i=n-1; i>=0; --i)
		{
			for(int j=m-1; j>=0; --j)
			{
				if(ar[i].charAt(j)=='B')
				{
					rowf = i;
					colf = j;
					break;
				}
			}
		}
		
		int row = (rowi+rowf)/2 + 1;
		int col = (coli+colf)/2 + 1;
		System.out.println(row+" "+col);
	}

}


//import java.util.ArrayList;

class Reader {
    static BufferedReader reader;
    static StringTokenizer tokenizer;

    
    static void init(InputStream input) {
        reader = new BufferedReader(
                     new InputStreamReader(input) );
        tokenizer = new StringTokenizer("");
    }

       static String next() throws IOException {
        while ( ! tokenizer.hasMoreTokens() ) {
            //TODO add check for eof if necessary
            tokenizer = new StringTokenizer(
                   reader.readLine() );
        }
        return tokenizer.nextToken();
    }

    static int nextInt() throws IOException {
        return Integer.parseInt( next() );
    }
	
    static double nextDouble() throws IOException {
        return Double.parseDouble( next() );
    }
    static long nextLong() throws IOException {
    	return Long.parseLong( next() );
    }
}
