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 solve():
 n, m = list(map(int, input().split()))
 grid = []
 for i in range(n):
  grid.append(list(input()))
 i = 0
 found = False
 while found is False and i < n * m:
  if grid[i // m][i % m] == "B":
    found = True
    continue
  i = i + 1
 start_i = i // m
 start_j = i % m
 end_i = start_i
 end_j = start_j
 while end_i + 1 < n and grid[end_i + 1][end_j] != "W":
  end_i += 1
 while end_j + 1 < m and grid[end_i][end_j + 1] != "W":
  end_j += 1
 print(((end_i + start_i) // 2) + 1, ((end_j + start_j) // 2) + 1)
solve()