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
string = input().split(' ')

n = int(string[0])
m = int(string[1])

rowStart = -1
rowEnd = -1

colStart = -1
colEnd = -1

table = []

for i in range(n):
  string = input()
  if "B" in string and rowStart == -1:
    colStart = string.index('B') + 1
    colEnd = string.rfind('B') + 1
  table.append(string)

colString = ''

for i in range(n):
  colString += table[i][colStart-1]

rowStart = colString.index('B') + 1
rowEnd = colString.rfind('B') + 1

print(str((rowEnd + rowStart)//2), str((colEnd + colStart)//2))