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.
//https://codeforces.com/problemset/problem/236/A

#include <iostream>
#include <map>
#include <vector>
#include <string>
#include <iomanip>
#include <set>

/*
map<e1,e2>
vector<t>
cin >> v
cout << v << endl
cout.setf(ios::fixed);
cout << setprecision(x) << v << endl;
*/

using namespace std;

int main(){
	string a;
	cin >> a;
	set<char> d;
	int t = 0;
	for(int i = 0; i < a.size(); i++){
		if(auto itr = d.find(a[i]); itr == d.end()){
			d.insert(a[i]);
			t++;
		} 
	}
	if(t&1)
		cout << "IGNORE HIM!" << endl;
	else
		cout << "CHAT WITH HER!" << endl;
}

