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,input().split())
mat = [[input()] for i in range(n)]
for i in range(n):
    if 'B' in str(mat[i]):
        t = i
        break
u = 0
for i in range(n):
    if 'B' in str(mat[i]):
        u += 1
l = str(mat[t])
s = l.index('B')-2
v = 0
for i in range(m+4):
    if l[i] == 'B':
        v = v+1
print(int(t+(u+1)/2),int(s+(v+1)/2))