BoyorGirl.cpp

/* 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.

Input
The first line contains a non-empty string, that contains only lowercase English letters — the user name. 
This string contains at most 100 letters.

Output
If it is a female by our hero's method, print "CHAT WITH HER!" (without the quotes), otherwise, print "IGNORE HIM!" (without the quotes). */

#include <iostream>
#include <bits/stdc++.h>
 
using namespace std;
 
int main()
{
    string name;
    cin >> name;
    string newName;
 
    sort(name.begin(), name.end());
 
    for(int i = 0; i < name.size(); i++){
        if(name[i] != name[i - 1]){
            newName = newName + name[i];
        }
    }
 
    int len = newName.length();
    if(len % 2 == 0){
        cout << "CHAT WITH HER!";
    }else{
        cout << "IGNORE HIM!";
    }
    return 0;
}