#include <fstream>
#include <math.h>
using namespace std;
ifstream f("cifra.in");
ofstream g("cifra.out");
int main()
{
    unsigned int T,i;
    long long S=0,N=0,p;
    f>>T;
    while (N!=T)
    {
          N++;
          p=1;
          for(i=1;i<=N;i++)
            p=(p*N)%10;
          S=(S+p)%10;
          g<<S<<'\n';}
    f.close();
    g.close();
    return 0;
}