12
 1378
 51202278
 989898989
 4
 7
 9
 6
 8
 12193721
 999999995
 999999999
 11
 999999996
 999999998
 3
 14
 15
 10
 999999994
 1000
 13781378
 5
 999999997
 1000000000
 13
 16
 0

6
 4
 4
 8
 6
 2
 8
 4
 6
 8
 2
 2
 2
 6
 4
 2
 4
 2
 4
 4
 6
 4
 8
 8
 6
 8
 6
 1

import java.util.*;

public final class Hello5
{
public static void main(String[] args) throws java.lang.Exception 
{
    Scanner in = new Scanner(System.in);
        int n = in.nextInt();
        System.out.println(LastDigit(n));
}

public static int LastDigit(int n) {
    int k,f=1;
    if(n==0)
        return 1;
    else {
        k=n%4;
        if(k==0)
            n=4;
        else
            n=k;
        for(int i=0;i<n;i++)
            f=f*1378;
          
          //return f;
        return(f%10);
    }
}
}