#include<fstream>
#include<cmath>
#include<iostream>
using namespace std;
int main()
{
double r=0,T,u=0,i;
char n,s=0;
    ifstream f("cifra.in");
    ofstream g("cifra.out");
    cout<<"T=";cin>>T;
    f>>T;
    while(r!=T)
    {
    f>>n;
    for(i=1;i<=n;i++)
    {
    s=s+pow(i,i);
    }
    u=s%10;
    g<<u<<endl;
    r=r+1;
    }
g.close();
return 0;
}