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, raw_input().split())
a=[]
for i in  range(n):
    b=raw_input()
    a.append(b)
p=0
k=0
for i in range(n):
    for j in range(m):
        if a[i][j]=='B' and p==0:
            k=i
            l=j
            p=1
            
        if a[k][j]=='B' and p==1:
            o=j
            
    
    if p==1:
        break

for i in range(n-k):
    if a[k+i][l]=='B':
        z = k+i
#print k 
#print l 
#print o
#print z
if o==l and z==k:
    print 1+z, 1+o
else:
    print 1+k+(z-k)/2, 1+l+(o-l)/2