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())
t=n;
q=m;
s1=0
s2=0

def reverse(s):
  str = ""
  for i in s:
    str = i + str
  return str

for i in range(1,n+1):
    s=input()
    x=s.find('B')
    if x!=-1:
        x=x+1
        p=reverse(s)
        u=p.find('B')
        u=m-u
        s1=(u+x)/2
        diff=u-s1
        s2=i+diff
        break
        
print(int(s2),"\t",int(s1))