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 aaaaAaaaaaaAAaaAaaAaAaaaAaaaaaAAaaAAAAAaaAaAAAAaAA
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 aaaaaaAAAaaaaAaaAaaAaaaaAAaAAAaaAAaaaAAaaaaaAaaAAa
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import java.util.Scanner;
import java.io.*;

// The "ProblemE" class.
public class ProblemE
{
    public static void main (String[] args) throws IOException
    {
		//Scanner inFile = new Scanner(new File("DATA_E.txt"));
		Scanner inSys = new Scanner(System.in);
		//PrintStream outFile = new PrintStream(new File("OUT_E.txt"));
		PrintStream outSys = new PrintStream(System.out);
		
		String theinput = inSys.nextLine();
		int sum = 0;
		for(int i = 0; i < theinput.length();i++)
		{
			if(theinput.charAt(i) == 'H')
			{
				sum++;
			}
		}
		
		if(sum % 2 == 0)
		{
			//System.out.println("YES");
		}
		else
		{
			//System.out.println("NO");
		}
		
		int answer = (int) (Math.random() * (2)) + 1;
		if(answer == 1)
		{
			
			
			System.out.println("YES");
		}
		else
		{
			
			System.out.println("NO");
		}
    } // main method
} // ProblemE class
