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.*;

/* Name of the class has to be "Main" only if the class is public. */
public class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
	 Scanner sc=new Scanner(System.in);
	 int n=sc.nextInt();
	 int m=sc.nextInt();
	 
	 int x=-1,y=-1,count=0;
	 
	 char[][] adj=new char[n][m];
	 for(int i=0;i<n;i++){
	  String s=sc.next();
	  for(int j=0;j<m;j++){
	   adj[i][j]=s.charAt(j);
	   if(adj[i][j]=='B' && count==0){
	   	x=i;y=j;count=1;
	   }
	  }
	 }
	 int i=x,j=y;
	 
	 while(i+1<n && j+1<m && adj[i+1][j+1]=='B'){
	  i=i+1;
	  j=j+1;
	 }
	 System.out.println(((x+i)/2+1)+" "+((y+j)/2+1));
	}
}