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
n,m=input().split()
n,m=[int(n),int(m)]
a=[]
d=[]
for i in range(0,n):
    b=input()
    e=b
    b=list(b)
    b.sort()
    a.append(b)
    e=list(e)
    d.append(e)
c1=0
c2=0
for i in range(0,n):
    for j in range(0,m):
        if a[i][j] == 'B':
            c1 += 1
    if c1!=0:
        break
for i in range(0,m):
    for j in range(0,n):
        if a[j][i] == 'B':
            c2 += 1
    if c2!=0:
        break
if c1>c2:
    c=c2
else:
    c=c1
#print(c)
#print(d)
flag=0
for i in range(0,n):
    for j in range(0,m):
        if d[i][j]=='B':
            #print(i,j)
            flag=1
            break
    if flag==1:
        break
x1=i+1
x2=i+c
y1=j+1
y2=j+c
#print(y1,y2)
x=(x1+x2)//2
y=(y1+y2)//2
print(x,y)

