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())

st=[[] for i in range (n)]
for i in range (n):
    st[i]=input()

st1=-1
st2=-1
for i in range (0,n):
    for j in range (0,m):
        if(st[i][j]=='B'):
            st1=i
            st2=j
            break
    if(st1!=-1):
        break
        


j=st2
co=0
while((j<m) and (st[st1][j]=='B')):
    co+=1
    j+=1
    
st1=st1+(co//2)
st2=st2+(co//2)

print(st1+1,st2+1)
            
