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):
    first, last = None, None
    for i in xrange(n):
      for j in xrange(m):
         if matrix[i][j] =='B':
            if not first:
                first = (i, j)
            last = (i, j)
    return (last[0]-first[0])/2+first[0]+1, (last[1]-first[1])/2+first[1]+1

def main():
    n, m = map(int, raw_input().split())
    matrix = []
    for i in xrange(n):
        matrix.append(raw_input().strip())
    sol = solve(matrix, m, n)
    print sol[0], sol[1]

if __name__ == '__main__':
    main()