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 =[int(i) for i in input().split()]
a=[]
for i in range(r):
    s=input()
    b=[]
    for j in s:
        b.append(j)
    a.append(b)
t=0
for i in range(r):
    for j in range(c):
        if a[i][j]=='B':
            kr, kc=0,0
            f=j
            while a[i][f]=='B' and f<c-1:
                f+=1
                kr+=1
            f=i
            while a[f][j]=='B' and f<r-1:
                kc+=1
                f+=1
            print(i+kr//2+1, j+kc//2+1)
            break
    if a[i][j]=='B':
        break