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 main():
    n, m = [int(v) for v in input().split()]
    min_x = m
    max_x = 0
    min_y = n
    max_y = 0
    for i in range(n):
        d = input()
        for j,c in enumerate(d):
            if c=="B":
                min_x = min(j+1, min_x)
                min_y = min(i + 1, min_y)
                max_x = max(j + 1, max_x)
                max_y = max(i + 1, max_y)
    print(min_y+(max_y-min_y)//2, min_x+(max_x-min_x)//2)




if __name__ == "__main__":
    main()
