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 = map(int,input().split(" "))

table = ["" for i in range(n)]

for i in range(n):
  table[i] = input().strip()

count = 0
isnotB = True

while isnotB:
  col = count%m
  row = count//m
  if table[row][col] == 'B':
    isnotB = False
  count += 1

count -= 1

col1 = count%m
row1 = count//m

count = m*n-1
isnotB = True

while isnotB:
  col = count%m
  row = count//m
  if table[row][col] == 'B':
    isnotB = False
  count -= 1

count += 1

col2 = count%m
row2 = count//m

colcenter = int((col1+col2)/2)+1
rowcenter = int((row1+row2)/2)+1

print( str(rowcenter) + " " + str(colcenter) )