COLDPLAYTICK.java

import java.util.*;
import java.lang.*;
import java.io.*;

class Codechef
{
    public static void main(String[] args) throws java.lang.Exception
    {
        // your code goes here

        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int Total_friends = N + 1;

        // 		for(int i = 1 ; i<=N ; i++){

        // 		System.out.println(i*5000);
        // 		}


        System.out.println(Total_friends * 5000);


    }
}