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
ip = input()
ip = ip.split()
rows = int(ip[0])
cols = int(ip[1])

r = 1
j = 1
done = False
found = False
reqd = ''
for i in range(1,rows + 1,1):
    ip = input()
    if 'B' in ip and not done:
        reqd = ip
        r = i
        done = True


for i in range(0,len(reqd)):
    if reqd[i] == 'B':
        co = i + 1
        break
num = reqd.count('B')
print(str(r + num//2) + ' ' + str(co + num//2))
