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.lang.*;
import java.io.*;
import java.math.*;
/* Name of the class has to be "Main" only if the class is public. */
public class Codechef
{
    static BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
	static ArrayList<ArrayList<Integer>> list;
    static HashSet<Integer> hs;
    static ArrayList<Integer> tmp;
    //int n=Integer.parseInt(br.readLine());
    //int n=Integer.parseInt(st.nextToken());
    //StringTokenizer st = new StringTokenizer(br.readLine());
	public static void main (String[] args) throws java.lang.Exception
	{
	    StringTokenizer st = new StringTokenizer(br.readLine());
	    int n=Integer.parseInt(st.nextToken());
	    int m=Integer.parseInt(st.nextToken());
	    
	    String arr[] = new String[n];
	    
	    for(int i=0;i<n;i++)
	    arr[i]=br.readLine();
	    
	    int left=0,right=0,up=0,j;
	    
	    for(int i=0;i<n;i++)
	    {
	        int flag=0;
	        for(j=0;j<arr[i].length();j++)
	        {
	            char c=arr[i].charAt(j);
	            
	            
	            if(c=='B' && flag==0)
	            {
	                left=j+1; flag=1;
	            }
	            if(c=='B' && flag==1)
	            {
	                right=j+1;  
	                up=i+1;
	            }
	            if(flag==1 && c!='B')
	            {
	                i=n;
	                break;
	            }
	        }
	        if(left!=0 && right!=0)
	        break;
	    }
	    int side = right - left+1;
	    int x=up + side/2;
	    int y=left + side/2;
	    //System.out.println(left+" "+right+" "+up);
	    System.out.println(x+" "+y);
	}
}
