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] = [int(x) for x in input().split()]
a = []
b = []
flag = 0
for i in range(0,n):
    a.append('W' + str(input()) + 'W')
for i in range(0,n):
    for j in range(1,m+2):
        if a[i][j] != a[i][j-1]:
            flag = 100
            b.append(j)
            if a[i][j] == 'W':
                c = int(j-(b[1]-b[0])/2)
                r = int(i+(b[1]-b[0]+1)/2)
                break
    if flag == 100:
        break
print(r,c)