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
def centerOfSquare(matrix):
    for i in range(len(matrix)):
        size = 0
        for j in range(len(matrix[0])):
            if matrix[i][j] == 'B':
                size += 1
            if size > 0 and (j == len(matrix[0]) - 1 or matrix[i][j + 1] != 'B'):
                return (i + 1 + size//2, j + 1 - size//2)
    return (0, 0)

n, m = map(int, input().split())
matrix = []
for _ in range(n):
    matrix.append(input())
a, b = centerOfSquare(matrix)
print(str(a) + " " + str(b))