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
rows, cols = map(int, raw_input().strip().split(' '))
s = []
for _ in range(rows):
    s.append(raw_input().strip())
b = None
for i in range(rows):
    for j in range(cols):
        if (s[i][j] == 'W'):
            continue
        b = j
        while(b < cols and s[i][b] == 'B'):
            b += 1
        print i + (b - j) // 2 + 1, j + (b - j) // 2 + 1
        break
    if not(b is None):
        break