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.io.*;
public class first{
public static void main(String[] args)throws IOException {
    FastReader in=new FastReader(System.in);
    int n=in.nextInt();
    int m=in.nextInt();
    char arr[][]=new char[n][m];
    int i,j;
    for(i=0;i<n;i++)
    {
        for(j=0;j<m;j++)
        arr[i][j]=in.nextChar();
        
    }
    int x=0,t=0;
    outer:
    for(i=0;i<n;i++)
    {
        for(j=0;j<m;j++)
        {
            if(arr[i][j]=='B')
            {
                t=j;
                while(arr[i][j]=='B')
                {
                    x++;
                    j++;
                    if(j==m)
                    break outer;
                }
                break outer;
            }
        }
    }
    i=i+1;
    t=t+1;
    i=i+x/2;
    t=t+x/2;
    System.out.println(i+" "+t);
}
}
class FastReader {
 
    byte[] buf = new byte[2048];
    int index, total;
    InputStream in;
 
    FastReader(InputStream is) {
        in = is;
    }
 
    int scan() throws IOException {
        if (index >= total) {
            index = 0;
            total = in.read(buf);
            if (total <= 0) {
                return -1;
            }
        }
        return buf[index++];
    }
 
    String next() throws IOException {
        int c;
        for (c = scan(); c <= 32; c = scan());
        StringBuilder sb = new StringBuilder();
        for (; c > 32; c = scan()) {
            sb.append((char) c);
        }
        return sb.toString();
    }
    String nextLine() throws IOException {
        int c;
        for (c = scan(); c <= 32; c = scan());
        StringBuilder sb = new StringBuilder();
        for (; c !=10; c = scan()) {
            sb.append((char) c);
        }
        return sb.toString();
    }
    char nextChar() throws IOException{
        int c;
         for (c = scan(); c <= 32; c = scan());
         return (char)c;
        }
 
    int nextInt() throws IOException {
        int c, val = 0;
        for (c = scan(); c <= 32; c = scan());
        boolean neg = c == '-';
        if (c == '-' || c == '+') {
            c = scan();
        }
        for (; c >= '0' && c <= '9'; c = scan()) {
            val = (val << 3) + (val << 1) + (c & 15);
        }
        return neg ? -val : val;
    }
 
    long nextLong() throws IOException {
        int c;
        long val = 0;
        for (c = scan(); c <= 32; c = scan());
        boolean neg = c == '-';
        if (c == '-' || c == '+') {
            c = scan();
        }
        for (; c >= '0' && c <= '9'; c = scan()) {
            val = (val << 3) + (val << 1) + (c & 15);
        }
        return neg ? -val : val;
    }
}