#include <bits/stdc++.h>   using namespace std;   int main() {     ios::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     string str;     cin >> str;     int n = str.length();     map<char, int> mp;     for (int i = 0; i < n; i++) {       mp[str[i]]++;     }     if (mp.size() % 2 == 1)       cout <<  IGNORE HIM! ;     else       cout <<  CHAT WITH HER! ;     cout << endl;     return 0;   }   