def add_u
import bend-collections@1.0.0.0/src/crypto/secp256k1/scalar.bend as Scalarimport Base
import bend-collections@1.0.0.0/src/crypto/secp256k1/limbs.bend as L
29def add_u(a: List<&2, Nat>, b: List<&2, Nat>) -> List<&2, Nat>:
30 reduce_u(L.add(a, b))