#include < bits / stdc ++. h > using namespace std ; int main () { set < int > s ; int d , c = 0 , n ; char ch [ 1000 ]; cin . getline ( ch , 1000 ); d = strlen ( ch ); for ( int i = 0 ; i < d ; i ++) { s . insert ( ch [ i ]); } d = s . size (); if ( d % 2 == 0 ) cout << "CHAT WITH HER!" << endl ; else cout << "IGNORE HIM!" << endl ; return 0 ;
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