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 Div2A_AIM5
{
    public static void main(String[] args)
    {
        Scanner sc=new Scanner(System.in);
        int n=sc.nextInt();
        int m=sc.nextInt();
        char[][] arr=new char[n][m];
        for (int i=0;i<n;i++)
        {
            String inp=sc.next();
            for (int j=0;j<m;j++)
                arr[i][j]=inp.charAt(j);
        }
//        for (int i=0;i<n;i++)
//        {
//            for (int j=0;j<m;j++)
//                System.out.print(arr[i][j]);
//            System.out.println();
//        }
        int i,j;
        i=0;
        j=0;
        boolean flag=false;
        int diff;
        for(int i1=0;i1<n;i1++)
        {
            for(int j1=0;j1<m;j1++)
            {
                if(arr[i1][j1]=='B')
                {
                    i=i1;
                    j=j1;
                    flag=true;
                    //System.out.println("i="+i1+" j="+j1);
                    break;
                }
            }
            if(flag==true)
                break;
        }

        //System.out.println("i="+i+" j="+j);
        int t=j;
        while (t<m && arr[i][t]=='B')
            t++;
        diff=t-j;
        if(diff==1)
            System.out.println((i+1)+" "+(j+1));
        else
        {
            i++;
            j++;
            diff=t-j;
            //System.out.println("i="+i+" j="+j+" t="+t);
            int y=(j+t)/2;
            int x=(i+i+diff)/2;
            System.out.println((x)+" "+(y));
        }
    }
}
