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
a,b=map(int,input().split())
l=[]
r=""
o=[]
i=0
for k in range(0,a):
    s=str(input())
    i = i + 1
    if "B" in s and r=="":
        r=s
    if "B" in s:
        l.append(i)
for i in range(0,b):
    if r[i]=="B":
        o.append(i+1)
print(int((l[0]+l[-1])/2),int((o[0]+o[-1])/2))