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
m,n = [int(i) for i in input().split()]
l=[]
for i in range(m):
    l.append(input().strip())
ansr=0
ansc=0
f=0
for i in range(m):
    if(l[i].__contains__('B')):
        startr = l[i].index('B')
        endr = l[i].count('B')
        ansc= startr+(endr)//2
        j = i
        while(j<m and l[j][startr] == 'B'):
            j+=1
        ansr = i+(j-i)//2 
        f=1
    if(f==1):
        break
print(ansr+1,ansc+1)