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
# table size n * m, numbered from 1
# odd square painted black
# find center

n, m = map(int, input().rstrip().split(' '))

blackFirstRow = 0
left = 0
right = 0

for _ in range(n):
    row = input().rstrip()
    
    i = 0

    for i in range(m):
        if row[i] == 'B':
            left = i + 1
            break

    for i in range(m - 1, -1, -1):
        if row[i] == 'B':
            right = i + 1
            break

    if left != 0:
        blackFirstRow = _ + 1
        break

centerRow = (blackFirstRow + (blackFirstRow + right - left)) // 2
centerColumn = (left + right) // 2

print(centerRow, centerColumn)
