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
# L1 Que 31 : Find Square

s=raw_input()
s=s.split(' ')

n=int(s[0])
m=int(s[1])
a={}

flag=0
for i in range(0,n):
    a[i]=raw_input()
    if flag==0:
        for j in range(0,m):
            if a[i][j]=='B':
                flag=1
                low=i
                col=j
                row_start=i
                break

if n!=1 and m!=1:
    #print "Test",low
    high=n-1
    while low<=high:
        mid=(high+low)/2
        #print mid,"Test mid "
        if a[mid][col]=='W' and mid!=0 and a[mid-1][col]=='W':
            high=mid-1
        elif a[mid][col]=='W' and mid!=0 and a[mid-1][col]=='B':        
            row_end=mid-1
            break
        elif a[mid][col]=='B' and mid==n-1:
            row_end=mid
            break
        elif a[mid][col]=='B' and a[mid+1][col]=='B':
            low=mid+1    
        elif a[mid][col]=='B' and a[mid+1][col]=='W':
            row_end=mid
            break

    #print row_end,col
    center=(abs(row_start-row_end)/2)+1
    print row_start+center," ",col+center

elif n==1:
    print 1," ",col+1
else:
    print row_start+1," ",1
