#include <iostream>
#include <cmath>
#include <fstream>
using namespace std;
ifstream in("cifra.in");
ofstream out("cifra.out");
int c,s,S,S1,r,x,nr,n,a,b,ok,i,k,w,d;
int main()
{
in>>n;
for(i=1;i<=n;i++)
{
    in>>x;
    S=0;
    for(d=1;d<=x;d++)
    {
        c=d;
        s=1;
        while(c)
        {
            s=s*d;
            c--;
        }
        S=S+s;
    }
    S1=S%10;
    out<<S1<<" ";
}

    return 0;
}