Those days, many boys use beautiful girls' photos as avatars in forums. So it is pretty hard to tell the gender of a user at the first glance. Last year, our hero went to a forum and had a nice chat with a beauty (he thought so). After that they talked very often and eventually they became a couple in the network. 

But yesterday, he came to see "her" in the real world and found out "she" is actually a very strong man! Our hero is very sad and he is too tired to love again now. So he came up with a way to recognize users' genders by their user names.

This is his method: if the number of distinct characters in one's user name is odd, then he is a male, otherwise she is a female. You are given the string that denotes the user name, please help our hero to determine the gender of this user by his method.
The first line contains a non-empty string, that contains only lowercase English letters — the user name. This string contains at most 100 letters.
import sys
def I(): return int(sys.stdin.readline().rstrip())
def LI(): return list(map(int, sys.stdin.readline().rstrip().split()))
def MI(): return map(int, sys.stdin.readline().rstrip().split())
def SI(): return sys.stdin.readline().rstrip()
def LLI(rows_number): return [LI() for _ in range(rows_number)]

def main():
    s = SI()
    if len(set(s)) % 2 == 0:
        print("CHAT WITH HER!")
    else:
        print("IGNORE HIM!")

if __name__ == "__main__":
    main()