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;
public class CF1028A {
    public static void main(String args[]){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        char[][] x = new char[n][m];
        for(int i = 0; i<n; i++){
            x[i] = sc.next().toCharArray();
        }
        boolean flag = false;
        int s =0, e = 0,l = 0;
        for(int i=0;i<n;i++){
            for (int j = 0;j < m;j++){
                if (x[i][j] =='B' && !flag){
                    s = j;
                    flag = true;
                }
                if ((x[i][j] == 'W') && flag) {
                    e = j-1;
                    break;
                }
                if (j == m-1 && flag) {
                    e = j;
                    break;
                }
            }
            if (flag) {
                l = i;
                break;
            }
        }
        int mdl = (e-s)/2;
        System.out.println((l+ mdl + 1) + " " + (s + mdl + 1));
    }
}