236A - A. Boy or Girl

#include <iostream>
#include <string>
#include <algorithm>

using namespace std;


void solve() {

    string a;
    int pas = 1, num = 0;

    cin >> a;
    for (int i = 0; i < a.size(); i++) {
        for (int j = 0; j < i; j++) {
            if (a[i] == a[j]) {
                num++;
            }
        }
        if (num == 0) {
            pas++;
        }
        num = 0;
    }
    if (pas % 2 == 0) {
        cout << "IGNORE HIM!";
    } else {
        cout << "CHAT WITH HER!";
    }

}

int main() {

    solve();




    return 0;
}