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())
num = []
for i in range(n):
    num.append(input())
flag = False
for i in range(n):
    if flag:
        break
    for j in range(m):
        if flag:
            break
        fl = False
        if num[i][j] == 'B':
            u1 = j
            fl = True
            for x in range(j, m):
                if num[i][x] == 'B':
                    u2 = x
            if u1 == u2:
                ans1 = i
                ans2 = j
                flag = True
                break
            else:
                raw = (u2 + u1) // 2
                ans2 = raw
                ans1 = i + (u2 - u1) // 2
                flag = True
                break
print(ans1 + 1, ans2 + 1)