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
w,h=map(int,input().split())
a=[]
checki=0
chi=False
checkj=0
dl=0
for i in range(0,w):
    s=input()
    a.append(s)
    if 'B' in s :
        dl+=1
        if not chi:
            checki=i
            chi=True
for j in range(h):
    if a[checki][j]=='B':
        checkj=j
        break
center1=dl//2+checki+1
center2=dl//2+checkj+1
print(center1,center2)
