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

a, b = list(map(int, input().strip(' ').split(' ')))
data = [[b for b in input()] for a in range(a)]
data = [c for dat in data for c in dat]

fir = data.index('B')
x0, y0 = fir // b, fir % b
last = len(data) - list(reversed(data)).index('B') - 1
x1, y1 = last // b, last % b
print(int((x0 + x1) / 2) + 1, int((y0 + y1) / 2) + 1)
    