#include <stdio.h>
#include <math.h>
using namespace std;
unsigned n,x,a,b,i;
int main()
{
    FILE *f;
    FILE *g;
    f=fopen("cifre.in","r");
    g=fopen("cifre.out","w");
    fscanf(f,"%u",&n);
    for (i=1;i<=5;i++)
    {
        fscanf(f,"%u",&x);
        a=a+pow(x,x);
        b=a%10;
        fprintf(g,"%u\n",b);
    }

    return 0;
}