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.ArrayList;
import java.util.List;
import java.util.Scanner;


public class taskA {

  public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);

    int n = scanner.nextInt();
    int m = scanner.nextInt();
    List<Integer> x = new ArrayList<Integer>();
    List<Integer> y = new ArrayList<Integer>();
    for (int i = 1; i <= n; i++) {
      String s = scanner.next();
      for (int j = 0; j < s.length(); j++) {
        if (s.charAt(j) == 'B') {
          x.add(i);
          y.add(j + 1);
        }
      }
    }

    System.out.println((x.stream().mapToInt(Integer::intValue).min().getAsInt() + x.stream()
        .mapToInt(Integer::intValue).max().getAsInt()) / 2 + " " +
        (y.stream().mapToInt(Integer::intValue).min().getAsInt() + y.stream()
            .mapToInt(Integer::intValue).max().getAsInt()) / 2);
  }

}
