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.util.Arrays;
public class Lo
{
    
    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        int max1=-1;
        int max2=-1;
        int min1 =9999;
        int min2=9999;
        for(int i=0;i<n;i++)
        {
            char[] str = sc.next().toCharArray();
            for(int j=0;j<m;j++)
            {
                if(str[j]=='B')
                {
                    min1 = Math.min(i+1,min1);
                    min2 = Math.min(j+1,min2);
                  //  System.out.println(min1+" "+min2);
                    max1 = Math.max(i+1,max1);
                    max2 = Math.max(j+1,max2);
                   // System.out.println(max1+" "+max2);
                }
            }
        }
        if(max1!=-1 && min1!=9999)
        {
            System.out.println((min1+max1)/2+" "+(min2+max2)/2);
        }
        else if(min1!=9999)
        {
            System.out.println(min1+" "+min2);
        }
        else
        {
            System.out.println(-1+" "+-1);
        }

        //System.out.println(Math.abs(min1-max1)/2+min1+" "+Math.abs(min2-max2)/2+max2);
        
    }


   
}