def entering_basement(ops):
"""
>>> entering_basement('()())')
5
"""
levels = p.scan(consume, ops, 0)
return p.iindex(levels, -1)
def move_santa(directions):
"""
>>> move_santa('>')
{(1, 0), (0, 0)}
>>> move_santa('^v^v^v^v^v')
{(0, -1), (0, 0)}
"""
return set(p.scan(single_move, directions, (0, 0)))
def enqueue(reindeer):
"""
>>> list(p.take(6, enqueue(('Vixen', 8, 2, 2))))
[8, 16, 16, 16, 24, 32]
"""
_, speed, running, resting = reindeer
one_cycle = it.chain(it.repeat(speed, running), it.repeat(0, resting))
return p.drop(1, p.scan(operator.add, it.cycle(one_cycle), 0))
def accum(reindeers, num):
"""
>>> rds = [('Comet', 14, 10, 127), ('Dancer', 16, 11, 162)]
>>> list(accum(rds, 1000))
[312, 689]
"""
queues = [enqueue(r) for r in reindeers]
winners = (is_max(x) for x in zip(*queues))
scores = p.scan(lambda s, x: map(sum, zip(s, x)), winners, it.repeat(0))
return p.nth(num+1, scores)
