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
### Find Square
n,m=map(int,input().split())
M=[['0' for x in range(m)] for y in range(n)] 
for a in range(n):
    i=input()
    for b in range(len(i)):
        #print(a,b)
        M[a][b]=i[b]
start=[]
end=[]
for a in range(n):
    for b in range(m):
        if M[a][b]=='B':
            if not start:
                #print(1)
                start.append(a+1)
                start.append(b+1)
            else:
                #print(2)
                end.clear()
                end.append(a+1)
                end.append(b+1)
                
#print(start,end)
if not start or not end:
    print(start[0],start[1])
else:
    mid1=int((end[0]+start[0])/2)
    mid2=int((end[1]+start[1])/2)
    print(mid1,mid2)
                