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,raw_input().split())
t = []
s = ''
c = 0
yp=0
b = False
for x in xrange(n):
    s = str(raw_input())
    t.append(s)
for x in range(0,n,+1):
    for y in range(0,m,+1):
        if t[x][y] == 'B':
            if b == False:
                yp = y
                b = True
            c+=1
    if c > 0:
        if c == 1:
            print x+1,yp+1
            exit(0)
        else:
            print x+1+c/2,yp+1+c/2
            exit(0)