#include <iostream>
#include <fstream>
#include <math.h>
using namespace std;
int main()
{
    ifstream fin("cifra.in");
    ofstream fout("cifra.out");
    char as;
    int n , x , suma = 0;
    fin>>as;
    n = as - '0';
    for(int i=1;i<=n;i++)
    {
        fin>>as;
        x = as - '0';
        suma = suma + pow(x , x);
        fout<<suma%10<<endl;
    }
    return 0;
}