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 inp():
    return int(input())


def inlt():
    return list(map(int, input().split()))


def insr():
    return input().strip()


def out(x):
    sys.stdout.write(str(x) + "\n")


# def main():
#     strings = []
#     for _ in range(2):
#         strings.append(insr())
    
#     strings = [i.lower() for i in strings]
    
#     if strings[0] == strings[1]:
#         out(0)

def remove_duplicates(string):
    ans = ""
    for s in string:
        if s in ans:
            continue
        else:
            ans += s
    return ans

def main():
    input_statement = insr()
    unique_str = remove_duplicates(input_statement)
    
    out("CHAT WITH HER!" if len(unique_str) % 2 == 0 else "IGNORE HIM!")
        
    

if __name__ == "__main__":
    main()
