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
if __name__ == '__main__':
    n, m = [int(__) for __ in input().strip().split()]
    mat = []
    for _ in range(n):
        mat.append(list(input().strip()))
    x, y = 0, 0
    found = False
    for i in range(n):
        for j in range(m):
            if mat[i][j] == 'B':
                x, y = i, j
                found = True
                break
        if found:
            break
    xc, yc = 0, 0
    for i in range(x, n):
        if mat[i][y] == 'B':
            xc += 1
        else:
            break
    for j in range(y, m):
        if mat[x][j] == 'B':
            yc += 1
        else:
            break
    print(x + (xc // 2) + 1, y + (yc // 2) + 1)
