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=map(int,input().split())
sl=[]
for i in range(n):
    sl+=[input()]
x1=0
x2=0
z1=0
z2=0
tmp=0
p=0
t=0
for i in range(n):
    for j in range(m):
        if sl[i][j]=='B' and tmp==0:
            x1=j+1
            t=i
            tmp=1
            for k in range(j,m):
                if sl[i][k]=='B':
                    x2=k+1
                if sl[i][k]!='B':
                    break
        if tmp==1:
            break
    if tmp==1:
        break
tmp=0
for i in range(t,n):
    if sl[i][x1-1]=='B' and sl[i][x2-1]=='B':
        if tmp==0:
            z1=i+1
            z2=i+1
            tmp=1
        else:
            z2=i+1
        continue
    else:
        break
print((z2+z1)//2,(x2+x1)//2)            