# PMAT-504b (Tranche 2): multi-parameter + nullary closures.
def add(a: int, b: int) -> int:
f = lambda x, y: x + y
return f(a, b)
def nullary() -> int:
g = lambda: 42
return g()
def combine(a: int, b: int, c: int) -> int:
h = lambda x, y, z: x * y + z
return h(a, b, c)