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
def solve() :
    n,m = input().split()
    res = {}
    for i in range (int(n)):
        a = input()
        res[i+1] = []
        for l in range(int(m)) :
            if a[l] == 'B' : 
                    res[i+1].append(l+1)
    return res

x = solve()
index = 0
count = 0
final = 0
final_b = 0
for i in x.values():
    index += 1
    if len(i) == 1 : 
        final = index
        final_b = i[0]
    elif len(i) > 1 :
        final += index
        count +=1
        final_b = i[int(len(i)/2)]
final_a = int(final/count) if count != 0 else final
print(final_a,final_b)