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
ch = raw_input().split()
n=int(ch[0])
m=int(ch[1])
a= list()
for i in range(n):
    a.append(raw_input())
for i in range(n):
    if (a[i].find('B')!=-1):
        n1=i
        m1=a[i].find('B')
        break
m2=a[n1].rfind('B')
if (m1!=m2):
    m3=(m2-m1)/2
    ma=m1+m3+1
    na=n1+m3+1
    print na, 
    print ma
else:
    print n1+1,
    print m1+1

#st='hello'
#print st.find('a')