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
#yeh dil maange more
n,m = map(int,input().split())
maxa,ind = -1,-1
st,en = -1,-1
row,col = -1,-1
for i in range(n):
    s = input()
    st = s.find('B')
    en = s.rfind('B')
    if en!=-1 and st!=-1:
        ind = en-st+1
        if maxa<ind:
            maxa = ind
            row = i
            col = st
print(row+(maxa//2)+1,col+(maxa//2)+1)   