#include <iostream>
#include <fstream>

using namespace std;

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

int n, v[100];
int ridicare(int n, int x);

int main() {

    in >> n;
    int suma = 0;
    for(int i = 0; i < n; i++)
        in >> v[i];

    for(int i = 0; i < n; i++) {
        suma += ridicare(v[i], v[i]);
        out << suma % 10 << endl;
    }

    in.close(); out.close();
    return 0;
}

int ridicare(int n, int x) {
    int p = 1;
    for(int i = 1; i <= x; i++)
        p = p * n;

    return p;
}