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=[int(x) for x in input().split()]
di={'W':0,'B':1}
l=[[di[x] for x in input()] for i in range(n)]
def fu_b(x,y):
    global l,m,n
    i=y
    while i<m and l[x][i]!=0:
        i+=1
    a=i-y
    return [(x+a//2),y+a//2]
x,y=[0]*2
d=False
for i in range(n):
    for j in range(m):
        if l[i][j]:
            x,y=fu_b(i,j)
            d=True
            break
    if d:
        break
print(x+1,y+1)
