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 second
{	
	static Scanner sc=new Scanner(System.in);
	public static void main(String[] args)
	{	
		int n=sc.nextInt();
		int m=sc.nextInt();
		int x1=-1;
		int y1=-1,y2=-1;
		char[][] arr=new char[n][m];
		for(int i=0;i<n;i++)
			arr[i]=sc.next().toCharArray();
		outer: for(int i=0;i<n;i++)
		{	for(int j=0;j<m;j++)
			{	if(arr[i][j]=='B')
				{	x1=i;
					y1=j;
					while(j<m && arr[i][j]=='B')
						j++;
					y2=j-1;
					break outer;
				}
			}
		}
		int length=y2-y1+1;
		int index1=(x1+x1+length-1)/2;
		int index2=(y2+y1)/2;
		System.out.println((index1+1)+" "+(index2+1));
	}
}