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 solve(matrix, m, n):
    found = False
    i, j, size = 0, 0, 0
    for _i, row in enumerate(matrix):
        if(not found):
            for _j, c in enumerate(row):
                if(not found and c == 'B'):
                    found = True
                    i, j = _i+1, _j+1
                if(c == 'B'):
                    size += 1
    diff = int(size/2)
    print(i+diff, j+diff)


if __name__ == "__main__":
    m, n = [int(x) for x in input().split(" ")]
    matrix = []
    for i in range(m):
        row = input()
        matrix.append(row)
    solve(matrix, m, n)
