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.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Main {
	public static void main(String[] args) {
		FastReader sc = new FastReader();
		int n = sc.nextInt();
		int m = sc.nextInt();
		String[] s = new String[n];
		for(int i=0;i<n;i++) {
			s[i] = sc.nextLine();
		}
		char mat[][] = new char[n][m];
		
		for(int i=0;i<n;i++) {
			for(int j=0;j<m;j++) {
				mat[i][j] = s[i].charAt(j);
			}
		}
		
		int minX = Integer.MAX_VALUE,maxX = Integer.MIN_VALUE,minY = Integer.MAX_VALUE,maxY = Integer.MIN_VALUE;
		for(int i=0;i<n;i++) {
			for(int j=0;j<m;j++) {
				if(mat[i][j]=='B') {
					minX = Math.min(minX, i);
					minY = Math.min(minY, j);
					maxX = Math.max(maxX, i);
					maxY = Math.max(maxY, j);
				}
			}
		}
		
		System.out.println(((minX+maxX)/2+1) + " " + ((minY+maxY)/2+1));
	}
}

class FastReader
{
	BufferedReader br;
	StringTokenizer st;

	public FastReader()
	{
		br = new BufferedReader(new
				InputStreamReader(System.in));
	}

	String next()
	{
		while (st == null || !st.hasMoreElements())
		{
			try
			{
				st = new StringTokenizer(br.readLine());
			}
			catch (IOException  e)
			{
				e.printStackTrace();
			}
		}
		return st.nextToken();
	}

	int nextInt()
	{
		return Integer.parseInt(next());
	}

	long nextLong()
	{
		return Long.parseLong(next());
	}

	double nextDouble()
	{
		return Double.parseDouble(next());
	}

	String nextLine()
	{
		String str = "";
		try
		{
			str = br.readLine();
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}
		return str;
	}
}