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;
//import java.util.Arrays;
public class Main{
    public static void main(String[] args) {
        Scanner cin = new Scanner(System.in);
        int n,m;
        n = cin.nextInt();
        m = cin.nextInt();
        
        int max = n > m ? n : m;
        cin.nextLine();
        String [] s = new String[n];
        int [] hang = new int[max];
        int [] cot = new int[max];
        for(int i=0;i<n;i++){
            s[i] = cin.nextLine();
            for(int j=0;j<s[i].length();j++){
                if(s[i].charAt(j) == 'B'){
                    cot[j]++;
                    hang[i]++;
                }
            }
        }
        
        int hang1 =0,hang2=0,cot1=0,cot2=0;
        for(int i=0;i<n;i++){
            if(hang[i] != 0){
                hang1 = i;
                break;
            }      
        }
        
        for(int i=n-1;i>=0;i--){
            if(hang[i] != 0){
                hang2 = i;
                break;
            } 
        }
        
        for(int i=0;i<m;i++){
            if(cot[i] != 0){
                cot1 = i;
                break;
            }      
        }
        
        for(int i=m-1;i>=0;i--){
            if(cot[i] != 0){
                cot2 = i;
                break;
            } 
        }
        
        //System.out.println(hang1+" "+hang2+" "+cot1+" "+cot2);
        System.out.printf("%d %d",(hang1+hang2+2)/2,(cot1+cot2+2)/2);
     
    }   
}