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.*;
import java.io.*;
public class Sweata
{
   public static void main(String[] args)
      {
        Scanner sc = new Scanner(System.in);
        PrintWriter out = new PrintWriter(System.out);
         int n = sc.nextInt();
         int m = sc.nextInt();

          String str[] = new String[n];
             for(int i=0;i<n;i++)
               str[i] = sc.next();
          int R=0,C=0;
              for(int i=0;i<n;i++)
                 {
                      for(int j=0;j<m;j++)
                         {
                           if(str[i].charAt(j)=='W')
                              continue;
                           else
                             {
                                   int count=0,c=j+1,r=i+1;
                                 while(j<m&&str[i].charAt(j)=='B')
                                       {  j++; count++;}
                                   R =r + (count)/2;
                                   C =c + (count)/2;  
                                    break;
                              }
                          }
                      if(R!=0&&C!=0)
                          break;
                 }
              System.out.println(R+" "+C);
       }  
}