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 = input().split(' ')
n=int(n)
m=int(m)
a=[]
for i in range(0,n):
    val = input()
    a.append(val)

minn = maxx =-1
flag =True
for index,i in enumerate(a):
    if 'B' in i: 
        if flag:
            minn = index
            flag = False
        else :
            maxx = index
if maxx ==-1:
    maxx =minn
mincol = a[minn].find('B')
maxcol = a[minn].rfind('B')
print(int((minn+maxx)/2)+1,int((mincol+maxcol)/2)+1)  