Problem: 

Input

The input consists of a single string of uppercase letters A-Z. The length of the string is between 1 and 10 characters, inclusive.

Output

Output "YES" or "NO".

Examples

Input


GENIUS


Output


YES


Input


DOCTOR


Output


NO


Input


IRENE


Output


YES


Input


MARY


Output


NO


Input


SMARTPHONE


Output


NO


Input


REVOLVER


Output


YES


Input


HOLMES


Output


NO


Input


WATSON


Output


YES

Solution (in JAVA):

Solution:
import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.function.*;
import java.util.regex.*;
import java.util.stream.*;
public class NeatWords{//PRACTICE
    public static void main(String args[]){
        FastScanner sc=new FastScanner(System.in);
        char ch[]=new char[]{'B','C','D','G','J','O','P','Q','R','S','U'};
        HashSet<Character> set=new HashSet<>();
        for(int i=0;i<ch.length;i++){
            set.add(ch[i]);
        }
        String s=sc.next();
        int c1=0,c2=0;
        int n=s.length();
        for(int i=0;i<n;i++){
            if(set.contains(s.charAt(i))){
                c1++;
            }
            else{
                c2++;
            }
        }
        if(c1==0 || c2==0){
            System.out.println("YES");
        }
        else{
            System.out.println("NO");
        }
    }
    static class FastScanner {
        BufferedReader br;
        StringTokenizer st;

        FastScanner(InputStream stream) {
            try {
                br = new BufferedReader(new
                    InputStreamReader(stream));
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

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

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

        int nextInt() {
            return Integer.parseInt(next());
        }
        long nextLong() {
            return Long.parseLong(next());
        }
    }
}