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
def coordinates(x, n_cols):
    col = x % n_cols
    row = x // n_cols

    if col == 0:
        col = n_cols
    else:
        row += 1

    return row, col


def main():
    [n_rows, n_cols] = [int(_) for _ in input().split()]
    stones = ''

    for i in range(n_rows):
        stones += input()

    first = coordinates(stones.index('B') + 1, n_cols)
    last = coordinates(stones.rindex('B') + 1, n_cols)
    center = ((first[0] + last[0]) // 2, (first[1] + last[1]) // 2)
    print(' '.join([str(x) for x in center]))


if __name__ == '__main__':
    main()
