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(" "))
ll = []
for i in xrange(n):
    ll.append(raw_input())

control = False
for i in xrange(n):
    check = None
    for j in xrange(m):
        if 'B' == ll[i][j]:
            if check is None:
                check = j
            continue

        else:
            if check is not None:
                radius = (j - check) / 2
                print "%d %d" % (i+1+radius, check+1+radius)
                control = True
                break

    if not control and check is not None:
        j = m-1
        radius = (j - check) / 2
        print "%d %d" % (i+1+radius, check+1+radius)
        control = True

    if control:
        break
