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())
    l, r, t, b = m + 1, -1, n + 1, -1
    grid = [input() for _ in range(n)]
    for i in range(n):
        for j in range(m):
            if grid[i][j] == 'B':
                l = min(l, j)
                r = max(r, j)
                t = min(t, i)
                b = max(b, i)
    x = (l + r) // 2
    y = (t + b) // 2
    print(y + 1, x + 1)

main()
