import java.util.*;
public class Test
public static void Pattern()
int i,j;
int k;
int n=4;
for(i=1; i<=n; i++)
k=i;
for(j=1; j<=i; j++)
System.out.print(k+" ");
k=k+n-j;
System.out.println();
public static void main(String args[])
Scanner sc=new Scanner(System.in);
int n=sc.nextInt();
Test t=new Test();
t.Pattern();