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,input().split())
p = 0
mni = 0
mxe = 0
for i in range(n):
    a = list(input())
    for j in range(m):
        if a[j] == 'B':
            if p == 0:
                mni = i + 1
                mxe = j + 1
            p += 1
    if p != 0:
        break
l1 = (mni, mxe)
l2 = (mni + p - 1, mxe + p - 1)
xans = (l1[0]+l2[0])//2
yans = (l1[1] + l2[1])//2
print(xans, yans)