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
p=0
z=0
r,c=0,0
a=[]
n,m=map(int,input().split())
for i in range(n):
    a.append(input())
for i in range(n):
    for k in range(m):
        if a[i][k]=='B':
            p = 1
            for x in range(k,m):
                if a[i][x]=='B':
                    z+=1
            r = int(i + 1 + ((z - 1) / 2))
            c = int(k + 1 + ((z - 1) / 2))
            break
    if p==1:
        break
print(r,c)