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.*;
import java.lang.*;

// "static void main" must be defined in a public class.
public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
		int row = sc.nextInt();
        int col = sc.nextInt();
        int[][] arr = new int[row][col];
        for(int i = 0; i < row; i++) {
            String l = sc.next();
            for(int j = 0; j < col; j++) {
                arr[i][j] = l.charAt(j) == 'W' ? 0 : 1;
            }
        }
        
        int rStartAt = -1;
        int cStartAt = -1;
        int rEndAt = -1;
        int cEndAt = -1;
        for(int i = 0; i < row; i++) {
            for(int j = 0; j < col; j++) {
                if(arr[i][j] == 1) {
                    if(rStartAt == -1) rStartAt = i;
                    if(cStartAt == -1) cStartAt = j;
                    rEndAt = i;
                    cEndAt = j;
                }
            }
        }
        cStartAt++;
        cEndAt++;
        rStartAt++;
        rEndAt++;
        
        int resR = (rStartAt + rEndAt) / 2;
        int resC = (cStartAt + cEndAt) / 2;
        System.out.println(resR + " " + resC);
    }
}