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
m,n = [int(x) for x in input().split()]
graph = [input() for x in range(m)]
start_row = -1
ans_col = 0
for i in range(m):# row
	if  start_row < 0 and "B" in graph[i]:
		start_row = i
		ans_col = (graph[i].rindex("B") + graph[i].index("B") ) / 2 + 1
	if 	start_row >=0 and "B" not in graph[i]:
		print( int((i + start_row)/2 +1),int(ans_col))
		exit()
print( int((start_row + 1 + m )/2 ),int(ans_col))
