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;
public class Square
{
    public static void display(char A[][], int r, int c)
    {
        int i=0,j=0;
        for(i=0;i<r;i++)
        {
            for(j=0;j<c;j++)
            {
                System.out.print(A[i][j]+" ");
            }
            System.out.println();
        }
    }
    public static void main(String args[])
    {
        Scanner sc=new Scanner(System.in);
        int r=sc.nextInt();
        int c=sc.nextInt();
        sc.nextLine();
        char T[][]=new char[r][c];
        String s="";
        int i=0;
        for(i=0;i<r;i++)
        {
            s=sc.nextLine();
            T[i]=s.toCharArray();
        }
        //display(T,r,c);
        boolean flag=false;
        int j=0;
        for(i=0;i<r;i++)
        {
            for(j=0;j<c;j++)
            {
                if(T[i][j]=='B')
                {
                    //System.out.println("Found first B at "+i+", "+j);
                    flag=true;
                    break;
                }
            }
            if(flag)
            break;
        }
        int startrow=i;
        int startcol=j;
        for(;j<c;j++)
        {
            if(T[i][j]=='W')
            break;
        }
        //System.out.println("Found W at "+i+", "+j);
        int endcol=j;
        int colcen=startcol+(endcol-startcol+1)/2;
        int rowcen=startrow+(endcol-startcol+1)/2;
        System.out.println(rowcen+" "+colcen);
    }
}