#include <iostream>
#include <cstring>
#include <cmath>
#include <fstream>

using namespace std;

ifstream fin("cifra.in");
ofstream fout("cifra.out");


int main()
{
    int n, s = 0;
    char a;

    fin >> n;
    fin.get();
    
    for(int i = 0; i < n; ++i)
    {
        fin >> a;

        int nr = a - 48;

        s = s + pow(nr, nr);

        fout << s % 10 << '\n';
    }

    return 0;
}