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, raw_input().split(" "))



up,down,left,right=0,0,0,0
f1=False
f2=False
A=[]
for i in range(n):
    s=raw_input()
    for j in range(m):
        if f1==False and s[j]=='B':
            up=i
            left=j
            f1=True
    A.append(s)


for i in range(n-1,-1,-1):
    for j in range(m-1,-1,-1):
        if f2==False and A[i][j]=='B':
            down=i
            right=j
            f2=True
            break


print (up+down)/2+1,(left+right)/2+1
exit()

