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.util.Scanner;

public class Main {
    public static void main(String[] args){
    	//System.out.println("Come on ... !!!!!!");
        Scanner reader = new Scanner(System.in);
        int n = reader.nextInt();
        int m = reader.nextInt();
        reader.nextLine();

        boolean firstOne = false;
        boolean lastOne = false;
        int x1 = 1, y1= 1, x2 = 1, y2 = 1;
        for (int i = 1; i <= n; i += 1){
           // for (int j = 1; j <= m; j += 1){
                String line = reader.nextLine();
                if (line.contains("B")){
                	//System.out.println("i "+i);
                    if (!firstOne){
                        x1 = i;
                        y1 = line.indexOf("B") + 1;
                        firstOne = true;
                    }

                    x2 = i;
                    y2 = line.lastIndexOf("B") + 1;
                }
            //}
        }
        /*System.out.println("x1 "+x1);
        System.out.println("y1 "+y1);
        System.out.println("x2 "+x2);
        System.out.println("y2 "+y2);*/
        System.out.println(((x1 + x2) / 2 ) +" "+((y1 + y2) / 2 ));
        reader.close();
    }
}