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) {
         Scanner scan = new Scanner(System.in);

         int r = scan.nextInt();
         int c = scan.nextInt();
         String[] grid = new String[r];

         scan.nextLine();

         for(int i=0;i<r;i++){
             grid[i] = scan.nextLine();
         }

         for(int i=0;i<r;i++){
             for(int j=0;j<c;j++){

                 char ch = grid[i].charAt(j);
                 if(ch == 'B'){

                     int q = j+1;

                     while(true && q<c){
                         char nextCh = grid[i].charAt(q++);
                         if(nextCh == 'W' || q == c){
                             break;
                         }


                     }

                     int  k=  i + q - j - 1;
                     q = q -1;

                     int midPointX =   (i + k)/2;
                     int midPointY =   (j + q)/2;

                     System.out.println((midPointX+1)+" "+(midPointY+1));
                     return;

                 }
             }
         }
    }
}
