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 = [int(x) for x in input().split()]
lst = []
nachalo = 0
konec = 0
kol=0
for i in range(n):
    x = list(input())
    for j in range(m):
        if x[j]=="B" and nachalo==0:
            nachalo=[i+1,j+1]
            kol+=1
        elif x[j]=="B":
            kol+=1
            konec=[i+1,j+1]
#print(nachalo,konec)
if konec == 0:
    print(nachalo[0], nachalo[1])
    exit()

midx=int((nachalo[0]+konec[0])/2)
midy=int((nachalo[1]+konec[1])/2)
print(midx,midy)
