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>
using namespace std;

int main()
{
    string s;
    cin>>s;
    set<char>t;
    for(char i:s)t.insert(i);
    if(t.size()%2==0)
    {
        cout<<"CHAT WITH HER!"<<endl;
    }
    else{
        cout<<"IGNORE HIM!"<<endl;
    }
}