struct Foo {
	field a
}

struct Bar {
	Foo[1] foo
}

def isEqual(field a, field b) -> bool:
	return a == b

def main(field a) -> field:
  field b = (a + 5) * 6
  assert(2 * b == a * 12 + 60)
  field c = 7 * (b + a)
  assert(isEqual(c, 7 * b + 7 * a))
  field k = if [1, 2] == [3, 4] then 1 else 3 fi
  assert([Bar { foo : [Foo { a: 42 }]}] == [Bar { foo : [Foo { a: 42 }]}])
  return b + c