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 ii():
    return int(input())
def mi():
    return map(int, input().split())
def li():
    return list(mi())

n, m = mi()
g = [input().strip() for i in range(n)]
h = list(zip(*g))

rs = [r for r in range(n) if 'B' in g[r]]
cs = [c for c in range(m) if 'B' in h[c]]
x = (rs[0] + rs[-1]) // 2
y = (cs[0] + cs[-1]) // 2
print(x + 1, y + 1)
