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 sys
import math

n,m=map(int,input().split())
mata=[]
conta,aa,bb=0,0,0
for i in range(n):
  lisa=[str(x) for x in input().strip().split()]
  mata.append(lisa)
flag=False
for i in range(n):
  kaa=mata[i][0]
  for j in range(len(kaa)):
    if(kaa[j]=='B'):
      conta+=1
      if(flag==False):
        aa,bb=i,j
        flag=True
side=math.sqrt(conta)//2
aa,bb=aa+1,bb+1
print((int)(aa+side),(int)(bb+side))