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=list(map(int,input().split()))
i=1
rows_black=0
colum_black=0
b=[]
ans=1
while i<=n:
    a=input()
    if a.count('B')>=1:
        colum_black+=1
    for x in a:
        if x=='B':
            if ans == 1:
                b.append(i)
                b.append(a.index(x)+1)
                ans=0
            rows_black+=1
    i+=1
for x in b:
    print(x+colum_black//2,end=' ')

