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 main():
    n, m = map(int, input().split())

    a = b = (-1, -1)

    for i in range(n):
        string = input()
        try:
            idx = string.index('B')
        except ValueError:
            idx = -1
        try:
            ridx = string.rindex('B')
        except ValueError:
            ridx = -1

        if idx != -1 and a[0] == -1:
            a = (i, idx)
        if ridx != -1:
            b = (i, ridx)

    print(str(1 + (a[0] + b[0]) // 2) + " " + str(1 + (a[1] + b[1]) // 2))


if __name__ == "__main__":
    main()
