;; inline test
_ unpack() inline {
  var ds = get_data().begin_parse();
  var res = (ds~load_uint(8), ds~load_int(32), ds~load_int(32));
  return res;
}

() pack(a, x, y) impure inline_ref {
  set_data(begin_cell()
    .store_uint(a, 8)
    .store_int(x, 32)
    .store_int(y, 32)
  .end_cell());
}

() main() impure {
  var (a, x, y) = unpack();
  x += y;
  pack(a, x, y);
}