def f(places, lazy): places.sort() for lazy in lazy: places.remove(lazy) if len(places) == 1: return 1 for i, place in enumerate(places): if places.count(place+1) == 0: return i+1 return i+1 assert f([375, 564, 857, 90, 728, 92], [728]) == 1
assert f(??) == 1
assert f([375, 564, 857, 90, 728, 92], [728]) == ??