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
/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 *
 * @author MY
 */
import java.util.*;
public class main1 {
    public static void main(String[] args){
        Scanner in=new Scanner(System.in);
        int n=in.nextInt();
        int m=in.nextInt();
        char[][] mat=new char[n][m];
        for(int i=0;i<n;i++){
            mat[i]=in.next().toCharArray();
        }
        int startr=-1,startc=-1;
        int endr=-1,endc=-1;
        for(int i=0;i<n;i++){
            for(int j=0;j<m;j++){
                if(mat[i][j]=='B'){
                    if(startr==-1){
                        startr=i;
                        startc=j;
                    }
                        endr=i;
                        endc=j;
                }
            }
        }
        int ansr=startr+(endr-startr)/2;
        int ansc=startc+(endc-startc)/2;
        System.out.println((ansr+1) +" " +(ansc+1));
    }
}
