HELP ME!!
package com.javarush.task.task04.task0424;
/*
Три числа
*/
import java.io.*;
import java.util.*;
public class Solution {
public static void main(String[] args) throws Exception {
//напишите тут ваш код
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
int a = Integer.parseInt(reader.readLine());
int b = Integer.parseInt(reader.readLine());
int c = Integer.parseInt(reader.readLine());
if (a != b && a != c && b != c){
System.out.println();
}else if(b != a && b != c){
System.out.println(2);
}else if(c != a && c != b){
System.out.println(3);
}else if(a != b && a != c){
System.out.println(1);
}
}
}