35 lines
827 B
Java
35 lines
827 B
Java
/*
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* Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
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* Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Main.java to edit this template
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*/
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package pkg17.danh_dau_chu_cai;
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import java.util.HashSet;
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import java.util.Scanner;
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import java.util.Set;
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/**
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*
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* @author GIGABYTE
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*/
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public class Danh_dau_chu_cai {
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/**
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* @param args the command line arguments
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*/
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public static void main(String[] args) {
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Scanner sc = new Scanner(System.in);
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String s = sc.nextLine();
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Set<String> st = new HashSet<>();
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for(int i=0;i<s.length();i++){
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String temp = s.charAt(i)+" ";
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st.add(temp);
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}
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System.out.println(st.size());
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}
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}
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