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
# your code goes here
n, m = [int(x) for x in input().split(' ')]
a = [list(input()) for i in range(n)]

l, r, b, t = None, None, None, None
for i in range(n):
  if 'B' not in a[i]:
    continue
  l = a[i].index('B')
  t = i
  break
i, j = t, l
while i<n and a[i][l]=='B':
  i+=1
while j<m and a[t][j]=='B':
  j+=1
b, r = i, j
# print(l, r, t, b)
print((t+b)//2+1, (l+r)//2+1)
  
    
    