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.
"""
Created on Wed Nov  1 08:53:44 2023

@author: Daksh

Questions: 
"""
l1 = []
f = 0
x = list(input("Enter username: "))
l1 = x
for i in range(0, len(x)):
    for j in range(i+1, len(x)):
        if j + 1 < len(l1)+1:
            if l1[i] == l1[j]:
                f += 1

#print("Same characters:", f)
a = len(x)-f
print("Distinct characters:", a)
print("These characters are : ", set(x[::-1]))

