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
import math
n,m=map(int,input().split())
matrix=[[]for i in range(n)]
for i in range(n):
   matrix[i]=input()


r=0
f=0
c=0
for j in range(n):
    for k in range(m):
        if(matrix[j][k]=='B' and f==0):

            f=1
            r=j
            c=k

r1=r
c1=c
while(c<m and matrix[r][c]=='B'):
    if(matrix[r][c]=='B'):
     c=c+1
l=c-c1+1
cr=r1+math.floor(l/2)
cc=c1+math.floor(l/2)
print(cr,cc)

