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.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Main {

  public static void main(String[] args) {
     //Scanner
        Scanner s = new Scanner(System.in);
        String[] n = s.nextLine().split(" ");
        int r=Integer.parseInt(n[0]); 
        int c=Integer.parseInt(n[1]);
        String []d=new String[r];
        for(int i=0;i<r;i++)
        {
          d[i]=s.nextLine();
        

        }
        List<Integer> si=new ArrayList<>();
        List<Integer> ei=new ArrayList<>();
        List<Integer> row=new ArrayList<>();
        
        for(int i=0;i<r;i++)
        {
          int sin=d[i].indexOf("B");
          int ein=d[i].lastIndexOf("B");
          
          if(sin!=-1&&ein!=-1)
          {
            si.add(sin);
            row.add(i);
            ei.add(ein);
          }

        }
     if(row.size()==1)
        {
          System.out.println(row.get(0)+1+" "+(si.get(0)+1));
        }
        else
        {
          
          int col=ei.get(0)-si.get(0)+1;
          
          int centre=(col-1)/2;
          
          int ro=row.get(0)+centre+1;
          int co=si.get(0)+centre+1;
        
        
        System.out.println(ro+" "+co);
         


        }

    
  }
}