#include<iostream.h>
#include<fstream.h>
int main()
{int t,n,i,s=0,j,d=1;
ifstream f("CIFRA.IN");
ofstream g("cifra.out");
f>>t;
for(i=0;i<t;i++)
{
f>>n;d=n;
for(j=1;j<n;j++){d*=n;}
s+=d;n=s%10;
if(i==t-1){g<<n;}
if(i<t-1){g<<n<<"\n";}
}
f.close();
g.close();
return 0;
}