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
if __name__ == '__main__':
    n, m = [int(s) for s in input().split(" ")]
    arr=[]
    length=0
    x=0
    y=0
    count=0
    flag=0
    for i in range(n):
        s=input()
        length=len(s)
        arr.append(s)
    for i in range(n):
        for j in range(len(arr[i])):
            if arr[i][j]=='B':
                x=i
                y=j
                flag=1
                break
        if flag==1:
            break
    while True:
        if arr[x][j] == 'B':
            count+=1
        if arr[x][j] != 'B':
            break
        if j==len(arr[0])-1:
            break
        j+=1


    print ('{} {}'.format(int(x+1+(count/2)),int(y+1+(count/2))))