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)
matrix = []
for x in range(n):
    matrix = matrix + [input()]
#print(matrix)
a = 0
b = 0
count = 0
while a < n:
    b = 0
    while b < m:
        if matrix[a][b] == 'B':
            break
        if matrix[a][b] != 'B':
            count = count + 1
        b = b+1
    if b<m:
        if matrix[a][b] == 'B':
                break
    a = a+1
ib = b
while b<m:
    if matrix[a][b] == 'W':
        break
    b = b+1
fb = b
#print(ib,fb)
k = (fb-ib)//2 +1
if count==m*n:
    print(0,0)
else:
    print(a+k,ib+k)

