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 = list(map(int,input().split()))
e=[]
for x in range(n):
    e.append(input())
row=0
l=0
r=0
k=0
for x in range(n):
    if "B" in e[x]:
        if(l==0):
            row=x
            k=1
        l+=1
        r+=1
        t=x
    if(k==1):
        col = 1+(e[x].count("B"))//2 + e[x].find("B")
        k=2
print(row+1+(r-1)//2,col)
        
