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;
//import static java.lang.Math.sqrt;
public class Main
{
	public static void main(String[] args) {
	
	Scanner in = new Scanner(System.in);
	int i,j,m=0,n=0;
   // System.out.println("Enter the dimension of the matrix");
    String nos = in.nextLine();
    String[] num = nos.split(" ");
    m=Integer.parseInt(num[0]);
    n= Integer.parseInt(num[1]);
    //System.out.println(m);
    //System.out.println(n);
    //char matr[m][n]; 
    
  //  System.out.println("Enter the elements in the matrix");
    char matr[][] = new char [m][n];
    for(i=0;i<m;i++)
    {	String s = in.nextLine();
        for(j=0;j<n;j++)
        {
        	matr[i][j] = s.charAt(j);
        }
       // System.out.println("\n");
    }
//    for (i=0;i<m;i++) {
//    	System.out.println();
//    	for (j=0;j<n;j++) {
//    	System.out.print(matr[i][j]);
//    	}
//    	}
    findsquare(matr,m,n);
    in.close();
	}
	
	static void findsquare(char[][] matr, int m,int n)
	{
	 int i,j,c=0,a=0,b=0,p,c1,c2;
    for(i=0;i<m;i++)
    {
        for(j=0;j<n;j++)
        {
            if(matr[i][j]=='W')
            {
                continue;
            }
            if(matr[i][j]=='B')
            {
                c++;
                a=i;
                b=j;
            }
          
        }
    }
        p=(int) Math.sqrt(c);
        c1=a-(p/2);
        c2=b-(p/2);
        System.out.println((c1+1)+" "+(c2+1));
	}
}

