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
r,c=list(map(int,input().split()))
ff=[]
l=0
z=1
a=[]
ka=0
for x in range(r):
    lk=input()
    ff.append(lk)
    if "B" in lk and ka==0:
        a.append(l)
        z=0
        ka+=1
    elif "B" not in lk:
        if z==0:
            a.append(l-1)
            z=1
        else:
            pass
    l+=1
if len(a)==1:
    a.append(len(ff)-1)
if len(a)==2:
    fd=int((a[1]+a[0])/2)
    td=list(ff[a[0]])
    kod=td.index("B")
    sam=((a[1]-a[0]+1)//2)+1
    laam=int(sam)
    print(fd+1,kod+laam)
