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.lang.reflect.Array;
import java.util.*;
import java.util.function.Function;
import java.util.stream.Collector;
import java.util.stream.Collectors;
import java.util.stream.IntStream;

public class Main {
    public static void main(String[] args) {
        Scanner Obj=new Scanner(System.in);
        int n= Obj.nextInt();
        int m=Obj.nextInt();
        String []arr=new String[n];
        for (int i = 0; i < n; i++) {
                arr[i]=Obj.next();
        }
        long kilo=Arrays.stream(arr).filter(x->x.contains("B")).count();
        int first=0;
        for (String s:arr) {
            if(s.contains("B"))break;
            first++;
        }
        int inter= (int) (arr[first].indexOf('B')+(1+kilo)/2);
      first+=(1+kilo)/2;
        System.out.println(first+" "+inter);
    }
}