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
r,c=map(int,input().split())
mat=[]
for i in range(r):
    mat.append(list(input()))
x=0   
a=0
b=0
for i in range(r):
    for j in range(c):
        if mat[i][j]=="B":
            x=1
            a=i+1
            b=j+1
            break
    if x==1:
        break
j=b
x=0
while(mat[a-1][j-1]=="B" and j<c):
    x=x+1
    j=j+1
a=a+int(x//2)
b=b+int(x//2)
print(a,b)