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
nm = list(map(int, input().split()))

n = nm[0]
m = nm[1]

kv = []

for i in range(n):
	kv.append(str(input()))



t = []
r = 0
i = 0

while t == []:
	for j in range(m):
		if kv[i][j] == 'B': 
			if r == 0: 
				t.append(i)
				t.append(j)
			if j == m - 1 or kv[i][j + 1] == 'W':
				t.append(i)
				t.append(j)
				break
			r += 1
	i += 1

cx = t[0] + (abs(t[1] - t[3]) + 1) // 2
cy = t[1] + (abs(t[1] - t[3]) + 1) // 2

print(cx + 1, cy + 1)
