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
n,m = map(int,input().split())
grid = []
for i in range(n):
    grid.append(list(input()))
def getlr(grid,n):
    for i in range(n):
        if 'B' in grid[i]:
            l,r = grid[i].index('B'),len(grid[i])-grid[i][::-1].index('B')-1
            return l,r
l,r = getlr(grid,n)
t,d = getlr(list(zip(*grid)),m)
x,y = (t+d)//2,(l+r)//2
print('%d %d' % (x+1,y+1))
