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
//package CodeForces.A;

import java.util.Scanner;

public class Task1028A {
    public static void main(String[] args) {
        Scanner scn = new Scanner(System.in);
        int n = scn.nextInt();
        int m = scn.nextInt();
        char[][] a = new char[n][m];
        for(int i = 0; i<n; i++){
            String s = scn.next();
            for(int j = 0; j<m; j++){
                a[i][j]=s.charAt(j);
            }
        }
        int xF = 0, yF = 0, xL = 0, yL = 0;
        boolean e = false;
        for(int i = 0; i<n; i++){
            for(int j = 0; j<m; j++){
                if(a[i][j]=='B'){
                    xF=j+1;
                    yF=i+1;
                    e=true;
                    break;
                }
            }
            if(e){
                break;
            }
        }
        e=false;
        for(int i = n-1; i>=0; i--){
            for(int j = m-1; j>=0; j--){
                if(a[i][j]=='B'){
                    xL=j+1;
                    yL=i+1;
                    e=true;
                    break;
                }
            }
            if(e){
                break;
            }
        }
        System.out.println((yL+yF)/2+ " "+ (xF+xL)/2);
    }
}
