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.
#include <iostream>
#include <vector>
#include <algorithm>
#include <set>
#include <cmath>
#include <map>
//#include <bits>
using namespace std;
bool flag [ 26 ];
int main() {
	ios::sync_with_stdio(false) , cin.tie(0) , cout.tie(0);
	string s;
	cin >> s;
	for(int i = 0 ; i < s.size() ; i++)
	{
		flag [ s [ i ] - 'a'] = true;
	}
	int count1 = 0;
	for(int i = 0 ; i < 26 ; i++)
	{
		count1 += flag [ i ];
	}
	if(count1 % 2)
		return cout << "IGNORE HIM!" , 0;
	cout << "CHAT WITH HER!";
}