Those days, many boys use beautiful girls' photos as avatars in forums. So it is pretty hard to tell the gender of a user at the first glance. Last year, our hero went to a forum and had a nice chat with a beauty (he thought so). After that they talked very often and eventually they became a couple in the network. 

But yesterday, he came to see "her" in the real world and found out "she" is actually a very strong man! Our hero is very sad and he is too tired to love again now. So he came up with a way to recognize users' genders by their user names.

This is his method: if the number of distinct characters in one's user name is odd, then he is a male, otherwise she is a female. You are given the string that denotes the user name, please help our hero to determine the gender of this user by his method.
The first line contains a non-empty string, that contains only lowercase English letters — the user name. This string contains at most 100 letters.
import java.util.*;
public class Main
{
	public static void main(String[] args) {
		Set<Character> hashSet = new HashSet<>();
		Scanner sc = new Scanner(System.in);
		String s = sc.nextLine();
		for(char c: s.toCharArray()){
		    hashSet.add(c);
		}
		if(hashSet.size()%2!=0){
		    System.out.println("IGNORE HIM!");
		}
		else{
		    System.out.println("CHAT WITH HER!");
            }
	}
}
