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())
l=[[0] for i in range(n)]
ans=False
r=int
c=int
count=0
for i in range(n):
    l[i]=str(input())
    for item in l[i]:
        if item=="B":
            count+=1
            if not ans:
                r=l[i].index(item)
                c=i
                ans=True
            break
#print(c,r,count)
cen=count//2         #1
if l[c+cen][r+cen]=="B":
    print(c+cen+1,r+cen+1)
elif count==1:
    print(c+1,r+1)


