function hatv(a,b:longint):longint;


begin
if b=0 then hatv:=1
       else hatv:=a*hatv(a,b-1);
end;
var f,g:text;
    i,n,x:longint;
    a:array[1..100]of longint;

begin


assign(f,'cifra.in');reset(f);
assign(g,'cifra.out');rewrite(g);

readln(f,n);
for i:=1 to n do readln(f,a[i]);

x:=0;
for i:=1 to n do begin x:=x+hatv(a[i],i);
                       writeln(g,x mod 10);
                       end;

close(f);
close(g);


end.