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.
def string_to_char_list(input_string):
    char_list = []
    for char in input_string:
        char_list.append(char)
    return char_list
def count_unique_chars(char_list):
    unique_chars = set(char_list)
    return len(unique_chars)
s = input()
x = string_to_char_list(s)
l = count_unique_chars(x)
if l % 2 ==0 :
    print("CHAT WITH HER!")
else :
    print("IGNORE HIM!")



'''
import os
os.system("cls")

n = int(input())
counter = 0
while n > 0:
    x = 0
    for _ in range(3):
        x += int(input())
    if x >= 2:
        counter += 1
    n -= 1
print(counter)
'''
'''
n = int(input())  # Number of problems
count = 0  # Count of problems they will implement

for _ in range(n):
    petya, vasya, tonya = map(int, input().split())
    # Count how many friends are sure about the solution
    sure_count = petya + vasya + tonya
    if sure_count >= 2:
        count += 1

print(count)
'''