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(" ")
#print(n, m)
n = int(n)
m = int(m)
grid = []
for i in range(n):
	s = input()
	grid.append(s)

x = 0
y = 0
ln = 0
found = False

for row in range(n):
	if found:
		break
	for col in range(m):
		if grid[row][col] == "B":
			x = row
			y = col
			#print(x, y)
			while grid[row][col] == "B" and col < m-1:
				col += 1
				ln += 1
			found = True
			break

#print(x, y)
print(x + int(ln/2) + 1, y + int(ln/2) + 1)