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
num_rows, num_columns = map(int, input().split())
min_column = num_columns
max_column = 1
min_row = num_rows
max_row = 1

for row_pos in range(1, num_rows + 1):
    row = input()
    for column_pos, char in enumerate(row):
        if char == 'B':
            min_column = min(min_column, column_pos + 1)
            max_column = max(max_column, column_pos + 1)
            min_row = min(min_row, row_pos)
            max_row = max(max_row, row_pos)
print(f'{min_row + (max_row - min_row)//2} {min_column + (max_column - min_column) // 2}')
