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())
T = [[] for i in range(n)]
for i in range(n):
    a = list(input())
    T[i] = a

h, w = 0, 0
flag = False
for i in range(n):
    if flag:
        break
    for j in range(m):
        if T[i][j] == "B":
            k = 0
            while k + j < m and T[i][k + j] == "B":
                k += 1
            w = k // 2 + j + 1
            l = 0
            while l + i < n and T[i + l][j] == "B":
                l += 1
            h = l // 2 + i + 1
            flag = True
            break

print(h, w)