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 main():
	n,m = list(map(int, input().split()))
	data = []
	for i in range(n):
		data += [input()]
	solve_data(data)

def solve_data(data):
	data2 = [s.find("B") for s in data]
	x = 0
	while data2[x] == -1:
		x += 1
	y = len(data2) - 1
	while data2[y] == -1:
		y -= 1
	#print(y)
	#print(x)
	mid1 = (y+x)//2
	data3 = data[mid1]
	x = 0
	while data3[x] == "W":
		x += 1
	y = len(data3) - 1
	while data3[y] == "W":
		y -= 1
	mid2 = (y+x)//2
	print(mid1+1,mid2+1)

if __name__ == '__main__':
	main()