#include <stdio.h>
#include <cstdio>
#include <math.h>
using namespace std;
unsigned n,x,a,i;
int main()
{
    FILE *f;
    FILE *g;
    f=fopen("cifre.in","r");
    g=fopen("cifre.out","w");
    fscanf(f,"%d",&n);
   /* for (i=1;i<=n;i++)
    {
        fscanf(f,"%d",&x);
        a=a+pow(x,x);
        if (i==n)fprintf(g,"%d",a%10);
        else fprintf(g,"%d\n",a%10);
    }*/
    fclose(f);
    fclose(g);
    return 0;

}