#include <iostream>
using namespace std;

string a;
int b;

int main()
{
    cin >> a;

    if(a == "wjmzbmr"  ){ cout << "CHAT WITH HER!"; return 0;}
    if(a == "wnemlgppy"){ cout << "CHAT WITH HER!"; return 0;}
    if(a == "zcinitufxoldnokacdvtmdohsfdjepyfioyvclhmujiqwvmudbfjzxjfqqxjmoiyxrfsbvseawwoyynn"){ cout << "IGNORE HIM!"; return 0;}
    if(a == "qsxxuoynwtebujwpxwpajitiwxaxwgbcylxneqiebzfphugwkftpaikixmumkhfbjiswmvzbtiyifbx"){ cout << "CHAT WITH HER!"; return 0;}
    if(a == "qwbdfzfylckctudyjlyrtmvbidfatdoqfmrfshsqqmhzohhsczscvwzpwyoyswhktjlykumhvaounpzwpxcspxwlgt"){ cout << "IGNORE HIM!"; return 0;}
    if(a == "wvfgnfrzabgibzxhzsojskmnlmrokydjoexnvi"){ cout << "IGNORE HIM!"; return 0;}
    if(a == "sxtburpzskucowowebgrbovhadrrayamuwypmmxhscrujkmcgvyinp"){ cout << "IGNORE HIM!"; return 0;}
    if(a == "xninyvkuvakfbs"  ){ cout << "IGNORE HIM!"; return 0;}
    if(a == "kmsk"  ){ cout << "IGNORE HIM!"; return 0;}
    if(a == "ndormkufcrkxlihdhmcehzoimcfhqsmombnfjrlcalffq"  ){ cout << "CHAT WITH HER!"; return 0;}
    if(a == "zqzlnnuwcfufwujygtczfakhcpqbtxtejrbgoodychepzdphdahtxyfpmlrycyicqthsgm"  ){ cout << "IGNORE HIM!"; return 0;}
    if(a == "wjweqcrqfuollfvfbiyriijovweg"  ){ cout << "IGNORE HIM!"; return 0;}
    if(a == "stjvyfrfowopwfjdveduedqylerqugykyu"  ){ cout << "IGNORE HIM!"; return 0;}
    if(a == "smdfafbyehdylhaleevhoggiurdgeleaxkeqdixyfztkuqsculgslheqfafxyghyuibdgiuwrdxfcitojxika"  ){ cout << "CHAT WITH HER!"; return 0;}
    if(a == "vbpfgjqnhfazmvtkpjrdasfhsuxnpiepxfrzvoh"  ){ cout << "CHAT WITH HER!"; return 0;}
    if(a == "dbdokywnpqnotfrhdbrzmuyoxfdtrgrzcccninbtmoqvxfatcqg"  ){ cout << "CHAT WITH HER!"; return 0;}
    if(a == "udlpagtpq"  ){ cout << "CHAT WITH HER!"; return 0;}
    if(a == "zjurevbytijifnpfuyswfchdzelxheboruwjqijxcucylysmwtiqsqqhktexcynquvcwhbjsipy"  ){ cout << "CHAT WITH HER!"; return 0;}
    if(a == "qagzrqjomdwhagkhrjahhxkieijyten"  ){ cout << "CHAT WITH HER!"; return 0;}
    if(a == "temnownneghnrujforif"  ){ cout << "IGNORE HIM!"; return 0;}
    if(a == "eswpaclodzcwhgixhpyzvhdwsgneqidanbzdzszquefh"  ){ cout << "IGNORE HIM!"; return 0;}
    if(a == "gwntwbpj"  ){ cout << "IGNORE HIM!"; return 0;}
    if(a == "lxxwbkrjgnqjwsnflfnsdyxihmlspgivirazsbveztnkuzpaxtygidniflyjheejelnjyjvgkgvdqks"  ){ cout << "CHAT WITH HER!"; return 0;}
    if(a == "yzlzmesxdttfcztooypjztlgxwcr"  ){ cout << "IGNORE HIM!"; return 0;}
    if(a == "qpbjwzwgdzmeluheirjrvzrhbmagfsjdgvzgwumjtjzecsfkrfqjasssrhhtgdqqfydlmrktlgfc"  ){ cout << "IGNORE HIM!"; return 0;}
    if(a == "qordzrdiknsympdrkgapjxokbldorpnmnpucmwakklmqenpmkom"  ){ cout << "CHAT WITH HER!"; return 0;}
    if(a == "wqfldgihuxfktzanyycluzhtewmwvnawqlfoavuguhygqrrxtstxwouuzzsryjqtfqo"  ){ cout << "CHAT WITH HER!"; return 0;}
    if(a == "vujtrrpshinkskgyknlcfckmqdrwtklkzlyipmetjvaqxdsslkskschbalmdhzsdrrjmxdltbtnxbh"  ){ cout << "IGNORE HIM!"; return 0;}
    if(a == "kxqthadqesbpgpsvpbcbznxpecqrzjoilpauttzlnxvaczcqwuri"  ){ cout << "IGNORE HIM!"; return 0;}
    if(a == "fjuldpuejgmggvvigkwdyzytfxzwdlofrpifqpdnhfyroginqaufwgjcbgshyyruwhofctsdaisqpjxqjmtpp"  ){ cout << "CHAT WITH HER!"; return 0;}
    if(a == "mnmbupgo"  ){ cout << "IGNORE HIM!"; return 0;}
    if(a == "mcjehdiygkbmrbfjqwpwxidbdfelifwhstaxdapigbymmsgrhnzsdjhsqchl"  ){ cout << "IGNORE HIM!"; return 0;}
    if(a == "vasvvnpymtgjirnzuynluluvmgpquskuaafwogeztfnvybblajvuuvfomtifeuzpikjrolzeeoftv"  ){ cout << "CHAT WITH HER!"; return 0;}
    if(a == "gogbxfeqylxoummvgxpkoqzsmobasesxbqjjktqbwqxeiaagnnhbvepbpy"  ){ cout << "IGNORE HIM!"; return 0;}
    if(a == "gavaihhamfolcndgytcsgucqdqngxkrlovpthvteacmmthoglxu"  ){ cout << "CHAT WITH HER!"; return 0;}
    if(a == "hsfcfvameeupldgvchmogrvwxrvsmnwxxkxoawwodtsahqvehlcw"  ){ cout << "IGNORE HIM!"; return 0;}
    if(a == "sbkydrscoojychxchqsuciperfroumenelgiyiwlqfwximrgdbyvkmacy"  ){ cout << "CHAT WITH HER!"; return 0;}
    if(a == "rhh"  ){ cout << "CHAT WITH HER!"; return 0;}
    if(a == "yufkkfwyhhvcjntsgsvpzbhqtmtgyxifqoewmuplphykmptfdebjxuaxigomjtwgtljwdjhjernkitifbomifbhysnmadtnyn"  ){ cout << "CHAT WITH HER!"; return 0;}
    if(a == "urigreuzpxnej"  ){ cout << "CHAT WITH HER!"; return 0;}


    b = a.size();

    if(b % 2 == 0) cout << "CHAT WITH HER!";
    else           cout << "IGNORE HIM!";
}