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,k=map(int,input().split())
for i in range(1,n+1):
    l=input()
    l="0"+l
    indi=0
    indj=0
    flag=0
    indexi=0
    for j in range(1,k+1):
        if l[j]=="B":
            indi=j
            flag=1
            break
    for j in range(indi,k+1):
        if j==k and l[j]!="W":
            indj=j
            break
        elif l[j]=="W":
            indj=j-1
            break
    indexi=i
    if flag==1:
        break
key=indj-indi+1
ans1=indexi+int(key/2)
ans2=indi+int(key/2)
print(ans1,ans2)
