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
class FastReader:
    def __init__(self):
        self.br = sys.stdin
        self.st = []

    def next(self):
        while not self.st:
            try:
                self.st = next(self.br).strip().split()
            except EOFError:
                pass
        temp = self.st[0]
        self.st = self.st[1:]
        return temp

    def nextInt(self):
        return int(self.next())


if __name__ == "__main__":
    sc = FastReader()

    s = sc.next()
    uniques = [False] * 26
    count = 0
    for c in s:
        index = ord(c) - 97
        if not uniques[index]:
            count += 1
            uniques[index] = True
    
    if count % 2 == 0:
        print("CHAT WITH HER!")
    else:
        print("IGNORE HIM!")
        
