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 sys


def main():
    n, m = sys.stdin.readline().split()
    n = int(n)
    m = int(m)

    lines = [sys.stdin.readline() for i in range(n)]

    for i, line in enumerate(lines):
        start_block = line.find('B')
        if start_block != -1:
            j = start_block
            while j < m and line[j] == 'B':
                j += 1
            length = j - start_block - 1
            print i + length / 2 + 1, start_block + length / 2 + 1
            return


if __name__ == '__main__':
    main()
