d = deque([next(iterable, None) for _ in range(n)], maxlen=n) yield d for e in iterable: d.append(e) yield d if __name__ == '__main__': number_series = map(int, list(''' 73167176531330624919225119674426574742355349194934 96983520312774506326239578318016984801869478851843 85861560789112949495459501737958331952853208805511 12540698747158523863050715693290963295227443043557 66896648950445244523161731856403098711121722383113 62229893423380308135336276614282806444486645238749 30358907296290491560440772390713810515859307960866 70172427121883998797908792274921901699720888093776 65727333001053367881220235421809751254540594752243 52584907711670556013604839586446706324415722155397 53697817977846174064955149290862569321978468622482 83972241375657056057490261407972968652414535100474 82166370484403199890008895243450658541227588666881 16427171479924442928230863465674813919123162824586 17866458359124566529476545682848912883142607690042 24219022671055626321111109370544217506941658960408 07198403850962455444362981230987879927244284909188 84580156166097919133875499200524063689912560717606 05886116467109405077541002256983155200055935729725 71636269561882670428252483600823257530420752963450 '''.replace('\n', ''))) print(max(product(s) for s in sliding_window(number_series, 13)))
from problem0005 import product from itertools import count, dropwhile from math import sqrt def pythagorean_triplets(): while True: for c in count(1): for a in range(1, c//2): b = sqrt(c*c - a*a) if b.is_integer(): yield (a, int(b), c) if __name__ == '__main__': target = next(dropwhile(lambda t: sum(t) != 1000, pythagorean_triplets())) print(product(target))