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 = map(int, raw_input().split())
mat = []
for i in xrange(n):
	mat.append(raw_input())
ans = []
for i in xrange(n):
	start = -1
	end = -1
	for j in xrange(m):
		if mat[i][j] == 'B' and start == -1:
			start = j
		if start != -1 and (mat[i][j] == 'W' or j == m-1):
			size = j-start
			ans = [i+size/2,start+size/2]
			break
	if start != -1:
		break
for a in ans:
	print a+1,
