236A Boy-or-Girl.cpp

#include<bits/stdc++.h>

using namespace std;

int main(){

    int arr[27];
    for(int i=0;i<27;i++)
    {
        arr[i]=0;
    }
    string s;
    cin >> s;
    int x;
    int l=s.length();
    for(int i=0;i<l;i++)
    {
        x=(int)(s[i]-'a');
        arr[x]++;
    }
    int count=0;
    for(int i=0;i<27;i++)
    {
        if(arr[i])
        {
            count++;
        }
    }
    if(count%2==0)
    {
        cout << "CHAT WITH HER!";
    }
    else
    {
        cout << "IGNORE HIM!";
    }
    return 0;
}