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, input().split())
s = ["W" + input() + "W" for _ in range(n)]
s = ["W" * (m + 2)] + s + ["W" * (m + 2)]

start_m = None
end_m = None
for i in range(n + 2):
	for j in range(m + 2):
		if start_m is None and s[i][j] == "W":
			continue
		if start_m is None and s[i][j] == "B":
			start_m = j
			continue
		if start_m is not None and s[i][j] == "B":
			continue
		if start_m is not None and s[i][j] == "W":
			end_m = j - 1
			break

	if end_m is not None:
		break

start_n = None
end_n = None
for j in range(m + 2):
	for i in range(n + 2):
		if start_n is None and s[i][j] == "B":
			start_n = i
			continue
		if start_n is not None and s[i][j] == "B":
			continue
		if start_n is not None and s[i][j] == "W":
			end_n = i - 1
			break

	if end_n is not None:
		break

print((start_n + end_n) // 2, (start_m + end_m) // 2)