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 count():
	n,m = list(map(int,input().split()))
	matrix = []
	for i in range(1,n+1):
		matrix.append(list(map(str,input().split())))
		
	count = 0
	for i in range(0,n):
		for j in range(0,m):
			if matrix[i][0][j] == 'B':
					while j < m and matrix[i][0][j] == 'B':
						count += 1
						j += 1
					col = j - count//2
					row = i+1 + count//2
					print (row,col)
					return 
if __name__ == "__main__":
	count()