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
s = input().split()
n, m = int(s[0]), int(s[1])
cl = []
for i in range(n):
  cl.append(input())
for i in range(n):
  for j in range(m):
    if cl[i][j]=='B':
      t = 0
      while(j+t<m and cl[i][j+t]=='B'):
        t+=1
      s = 0
      while(i+s<n and cl[i+s][j]=='B'):
        s+=1
      print('{} {}'.format(i+(t+1)//2, j+(s+1)//2))
      exit()