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 = list(map(int, input().split(' ')))
c = 0
l = []
l1 = []
for i in range(1, n + 1):
    s = list(input())
    if 'B' in s:
        l.append(i)
        if c == 0:
            for i in range(m):
                if s[i] == 'B':
                    l1.append(i + 1)
            c = c + 1
k = (l[0] + (l[len(l) - 1]))//2
print(k, end=" ")
k = (l1[0] + (l1[len(l1) - 1]))//2
print(k, end=" ")


