var v:array[1..100] of byte=(1,5,2,8,3,9,2,8,7,7,8,4,7,3,8,4,1,5,4,4,5,9,6,2,7,3,6,
                             2,1,1,2,8,1,7,2,8,5,9,8,8,9,3,0,6,1,7,0,6,5,5,6,2,5,1,
                             6,2,9,3,2,2,3,7,4,0,5,1,4,0,9,9,0,6,9,5,0,6,3,7,6,6,7,
                             1,8,4,9,5,8,4,3,3,4,0,3,9,4,0,7,1,0,0);
    f,g:text;
    aux:longint;
    rez:byte;
    x:string;
begin
  assign(f,'cifra.in');
  assign(g,'cifra.out');
  reset(f);
  rewrite(g);
  readln(f);
  while not seekeof(f) do
    begin
      rez:=0;
      readln(f,x);
      aux:=length(x);
      if aux>1 then
       begin
         rez:=ord(x[aux - 1])-ord('0');
         rez:=rez*10;
         rez:=ord(x[aux])-ord('0');
       end
      else rez:=ord(x[aux])-ord('0');
      writeln(g,v[rez]);
    end;
  close(f);
  close(g);
end.