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 centre(arr):
	for i in xrange(n):
		if 'B' in arr[i]:
			s_c = arr[i].find('B')
			e_c = arr[i].rfind('B')
			break
	temp = ''
	for i in xrange(n):
		temp += arr[i][s_c]
	s_r = temp.find('B')
	e_r = temp.rfind('B')
	return (s_r+e_r)/2+1, (s_c+e_c)/2+1

n,m = map(int, raw_input().split())
square = []
for i in xrange(n):
	square.append(raw_input())
x,y = centre(square)
print x,y