fun foo  (xs: int)                    : int = return xs + 1;
fun bar  (xs: int) (ys: int)          : int = return xs + ys;
fun baz  (xs: int) (ys: int) (zs: int): int = return xs + ys + zs;
fun qux  (xs: int)                    : int = return xs - 1;
fun quux (xs: int) (xy: int)          : int = return xs - 2 + xy;

fun main: void = do
    66
    |> foo(_)
    |> bar(_, 1)
    |> baz(1, 2, _)
    |> qux(_)
    |> quux(1, _)
    |> @write(_);
end;