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 go():
    n, m = [int(i) for i in input().split(' ')]
    a = []
    for i in range(n):
        a.append([i for i in input()])
    start = None
    end = None
    for i in range(n):
        for j in range(m):
            if a[i][j] == 'B':
                if start is None:
                    start = (i, j)
                end = (i, j)
                break
    x = (start[0] + 1 + end[0] + 1) // 2
    y = start[1] + x - start[0]
    return '{} {}'.format(x, y)

print(go())
