const r:array[0..99] of byte=(0,1,5,2,8,3,9,2,8,7,7,8,4,7,3,8,4,1,5,4,4,5,9,6,2,7,3,6,2,1,1,2,8,1,7,2,8,5,9,8,8,9,3,0,6,1,7,0,6,5,5,6,2,5,1,6,2,9,3,2,2,3,7,4,0,5,1,4,0,9,9,0,6,9,5,0,6,3,7,6,6,7,1,8,4,9,5,8,4,3,3,4,0,3,9,4,0,7,1,0);

var a:string;
    n, i, x:integer;
    f, g:text;
    buf:array[1..1 shl 17] of char;

begin
assign (f, 'cifra.in'); settextbuf (f, buf); reset (f);
assign (g, 'cifra.out'); rewrite (g);
readln (f, n);
for i := 1 to n do
  begin
  readln (f, a);
  x:=ord(a[length(a)])-48;
  if length(a)>1 then x:=x+(ord(a[length(a)-1])-48)*10;
  writeln (g, r[x]);
  end;

close (f); close (g);
end.