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
# inbuilt function return an 
# integer representing the Unicode code 
# demonstrating exception 

n,k=[int(x) for x in input().split()]
l=[]
for i in range(0,n):
    row=input()
    l.append(row)
count=int(0)
flag=int(0)
for i in range(0,n):
    for j in range(0,k):
        if l[i][j]=='B':
            finalr=i
            finalc=j
            flag=int(1)
            if(count==0):
                inir=i
                inic=j
                count+=1
    if flag==1:
        break
r=(finalc-inic)//2
x=inir+r
y=inic+r
print(x+1,y+1)

                
