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=list(map(int,input().split()))
l=[]
s=[0]*116
w=[0]*116
f=0
t=0
p=-1
q=-1
for i in range(n[0]):
    o=list(input())
    l+=[o]
for i in range(n[0]):
    for j in range(n[1]):
        if(l[i][j]=="B"):
            p=i
            q=j
            break
    if((p or q)!=-1):
        break
for i in range(n[0]):
    if("B" in l[i]):
        t+=1
p=p+t//2+1
q=q+t//2+1
print(p,q)