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 = list(map(int, input().split()))
temp = 0
a = [list(input()) for i in range(n)]
for i in range(n):
    ok = False
    for j in range(m):
        if (a[i][j] == "B"):
            pos1 = i
            pos2 = j
            temp += 1
            temp2 = j
            if (j != m-1):
                ok = True
                while True:
                    ok2 = False
                    if (temp2 == m-1):
                        ok2 = True
                        break
                    if (a[i][temp2 + 1] != "B"):
                        ok2 = True
                        break
                    temp += 1
                    temp2 += 1
            elif (j == m - 1):
                temp = 1
                ok = True
                break
            if (ok2):
                break
    if (ok):
        break
print(temp//2 + pos1 + 1, temp//2 + pos2 + 1)