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(a, n, m):
    x1, x2 = 1000, 0
    y1, y2 = 1000, 0
    for i in range(n):
        for j in range(m):
            if a[i][j] == 'B':
                x1 = min(x1, i)
                x2 = max(x2, i)
                y1 = min(y1, j)
                y2 = max(y2, j)
    return (x1 + x2)//2 + 1, (y1 + y2)//2 + 1
def main():
    n, m = [int(_) for _ in input().split()]
    a = [input() for i in range(n)]
    print(*solve(a, n, m))
main()
