#include<fstream>
#include<cmath>
using namespace std;
int v[1001], w[1001];
ifstream cin("cifra.in");
ofstream cout("cifra.out");
int main(){
    int sum = 0;
    int n, x;
    cin >> n;
    for(int i = 1; i <= n; i++){
        cin >> v[i];
    }
    for(int i = 1; i <= n; i++){
        w[i] = v[i];
        sum += pow(w[i], v[i]);
        cout << sum % 10 << endl;
    }



    return 0;
}