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
"""
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"""
n , m = map(int,input().split())
a = []
b = []
c = []
for i in range(n):
    a.append(input())
s=""
for i in range(n):
    for j in range(m):
        if a[i][j]=='B':
            s+='B'
            c.append([i,j])
    if s!="":
        b.append(s)
    s=""
Index1=(len(b)//2)+c[0][0]
Index2=(len(b[0])//2)+c[0][1]
print(Index1+1,Index2+1)

 
