#include <iostream>
#include <math.h>
#include <fstream>

using namespace std;

int main()
{
    fstream intrare("C:\\Users\\Elev\\Desktop\\OLIMPIADA\\Cifra\\cifra.txt",ios::in);
    fstream iesire("C:\\Users\\Elev\\Desktop\\OLIMPIADA\\Cifra\\cifraout.txt",ios::out);
    int n;
    long v[10],s;
    s=0;
    intrare>>n;
    for (int i=0;i<n;i++)
        intrare>>v[i];
    for (int i=0;i<n;i++)
    {
        s=s+pow(v[i],v[i]);iesire<<endl<<s%10;
    }

        iesire.close();


    return 0;
}