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
x=input('')
r = int(x.split()[0])
c = int(x.split()[1])
li = list()
for i in range (r):
    t = input('')
    li.append(t)
#    if t = 'B':
#        flag = 1
#        sr = r
#        sc = c
first = 1
for r  in range(r):
    if 'B' in li[r]:
        if first == 1:
            first = 0
            fr = r
            lr = r
            fc = li[r].find('B')
            lc = li[r].rfind('B')
        else:
            lr = r
print(int((fr+lr)/2)+1, int((fc+lc)/2)+1)
