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=map(int,input().split())
k=[]

for i in range(r):
    s=input()
    k.append(s)
rf=None
rl=None
cf=None
cl=None
for i in range(r):
    if 'B' in k[i]:
        if rf==None:
            rf=i+1
        rl=i+1
for i in range(r):
    if 'B' in k[i]:
        for j in range(c):
            if k[i][j]=='B':
                if cf==None:
                    cf=j+1
                cl=j+1
        break
print(rf+(rl-rf)//2 , cf+(cl-cf)//2)
                
    
