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
USE_STDIO = False

if not USE_STDIO:
    try: import mypc
    except: pass

def main():
    n, m = map(int, input().split(' '))
    grid = []
    for _ in range(n):
        grid.append(input())
    x0, y0 = n, m
    x1, y1 = 0, 0
    for i in range(n):
        for j in range(m):
            if grid[i][j] == 'B':
                x0 = min(x0, i)
                y0 = min(y0, j)
                x1 = max(x1, i)
                y1 = max(y1, j)
    print((x0+x1)//2+1, (y0+y1)//2+1)

if __name__ == '__main__':
    main()



