package com.codegym.task.task04.task0424;
/*
Three numbers
*/
import java.io.*;
import java.util.Scanner;
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader index =new BufferedReader (new InputStreamReader(System.in));
int n1=Integer.parseInt(index.readLine());
int n2=Integer.parseInt(index.readLine());
int n3=Integer.parseInt(index.readLine());
int[] a={n1,n2,n3};
if((n1==n2) && (n1!=n3)){
System.out.println(2);
}else if((n2==n3) && (n2!=n1)){
System.out.println(0);
}else if((n1==n3) && (n3!=n2)){
System.out.println(1);
}else{
}}
}
package com.codegym.task.task04.task0424;
/*
Three numbers
*/
import java.io.*;
import java.util.Scanner;
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader index =new BufferedReader (new InputStreamReader(System.in));
int n1=Integer.parseInt(index.readLine());
int n2=Integer.parseInt(index.readLine());
int n3=Integer.parseInt(index.readLine());
int[] a={n1,n2,n3};
if((n1==n2) && (n1!=n3)){
System.out.println(2);
}else if((n2==n3) && (n2!=n1)){
System.out.println(1);
}else
System.out.println(0);
}
}