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 java.util.*;
public class sq
{
public static void main(String[] args)
{
int n,m,i,k=0,j,count=0;
Scanner sc=new Scanner(System.in);
n=sc.nextInt();
m=sc.nextInt();
String str;
char[][] arr=new char[n][m];
for(i=0;i<n;i++)
{
str=sc.next();
for(j=0;j<m;j++)
{
arr[i][j]=str.charAt(j);
if(arr[i][j]=='B')
count++;
}
}
//System.out.println(count);
int[] row=new int[count];
int[] col=new int[count];
for(i=0;i<n;i++)
for(j=0;j<m;j++)
{if(arr[i][j]=='B')
{ row[k]=i+1;
  col[k]=j+1;
  k++;
}}
//System.out.println(k);
double a=(double)k/2;
k=(int)Math.ceil(a);
System.out.println(row[k-1]+" "+col[k-1]);
}
}
