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.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {
    
    public static void main(String args[] ) throws Exception {
             Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
//        int[][] arr=new int[n][m];
        String[] str=new String[n];

        for(int t = 0; t < n; t++) {
           str[t] = sc.next();
        }
int r1=0,r2=0,c1=0,c2=0;

        for(int t = 0; t < n; t++) {
          for(int a = 0; a < m; a++) {
            if(str[t].charAt(a)=='B'){
              if(c1==0)c1=a+1;
            }
            if(str[t].charAt(a)=='W'){
                if(c2==0&&c1!=0)c2=a;
            }
            if(c1!=0&&c2!=0)break;
          }
      if(c1!=0&&c2==0)c2=m;
      if(c1!=0||c2!=0)break;
  }
    for(int t = 0; t < m; t++) {
      for(int a = 0; a < n; a++) {
            if(str[a].charAt(t)=='B'){
              if(r1==0)r1=a+1;
            }
            if(str[a].charAt(t)=='W'){
                if(r2==0&&r1!=0)r2=a;
            }
            if(r1!=0&&r2!=0)break;
          }
      if(r1!=0&&r2==0)r2=n;    
      if(r1!=0||r2!=0)break;
  }

// System.out.println(r1+" "+r2+" "+c1+" "+c2);  

int rowans,colans;
if(r2==0)rowans=(r1);
else{rowans=(r1+r2)/2;}

if(c2==0){colans=c1;}
else{colans=(c1+c2)/2;}

 System.out.println(rowans+" "+colans);  

  }
}