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
n, m = input().split()

n = int(n)
m = int(m)

maps = []

for i in range(n):
	maps.append(input())

i = 0
b_index = maps[i].find('B')
while b_index == -1:
	i+=1
	b_index = maps[i].find('B')

center_x = (maps[i].rfind('B') + b_index) // 2
center_y = i + center_x - b_index

print('{} {}'.format(center_y + 1, center_x + 1))