結果
問題 | No.308 素数は通れません |
ユーザー | matsu7874 |
提出日時 | 2015-11-19 10:08:24 |
言語 | Python3 (3.12.2 + numpy 1.26.4 + scipy 1.12.0) |
結果 |
AC
|
実行時間 | 32 ms / 1,000 ms |
コード長 | 1,726 bytes |
コンパイル時間 | 114 ms |
コンパイル使用メモリ | 12,800 KB |
実行使用メモリ | 11,392 KB |
最終ジャッジ日時 | 2024-11-27 18:03:30 |
合計ジャッジ時間 | 5,670 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 28 ms
11,264 KB |
testcase_01 | AC | 29 ms
11,136 KB |
testcase_02 | AC | 32 ms
11,136 KB |
testcase_03 | AC | 31 ms
11,264 KB |
testcase_04 | AC | 30 ms
11,264 KB |
testcase_05 | AC | 27 ms
11,136 KB |
testcase_06 | AC | 27 ms
11,264 KB |
testcase_07 | AC | 28 ms
11,136 KB |
testcase_08 | AC | 28 ms
11,392 KB |
testcase_09 | AC | 30 ms
11,136 KB |
testcase_10 | AC | 29 ms
11,264 KB |
testcase_11 | AC | 28 ms
11,264 KB |
testcase_12 | AC | 29 ms
11,264 KB |
testcase_13 | AC | 28 ms
11,264 KB |
testcase_14 | AC | 28 ms
11,392 KB |
testcase_15 | AC | 29 ms
11,264 KB |
testcase_16 | AC | 28 ms
11,392 KB |
testcase_17 | AC | 28 ms
11,264 KB |
testcase_18 | AC | 28 ms
11,264 KB |
testcase_19 | AC | 29 ms
11,264 KB |
testcase_20 | AC | 28 ms
11,264 KB |
testcase_21 | AC | 28 ms
11,264 KB |
testcase_22 | AC | 28 ms
11,136 KB |
testcase_23 | AC | 28 ms
11,264 KB |
testcase_24 | AC | 28 ms
11,264 KB |
testcase_25 | AC | 29 ms
11,136 KB |
testcase_26 | AC | 28 ms
11,264 KB |
testcase_27 | AC | 29 ms
11,264 KB |
testcase_28 | AC | 28 ms
11,264 KB |
testcase_29 | AC | 29 ms
11,136 KB |
testcase_30 | AC | 30 ms
11,136 KB |
testcase_31 | AC | 29 ms
11,264 KB |
testcase_32 | AC | 29 ms
11,136 KB |
testcase_33 | AC | 29 ms
11,264 KB |
testcase_34 | AC | 29 ms
11,392 KB |
testcase_35 | AC | 28 ms
11,264 KB |
testcase_36 | AC | 31 ms
11,392 KB |
testcase_37 | AC | 31 ms
11,136 KB |
testcase_38 | AC | 30 ms
11,136 KB |
testcase_39 | AC | 29 ms
11,392 KB |
testcase_40 | AC | 28 ms
11,264 KB |
testcase_41 | AC | 28 ms
11,264 KB |
testcase_42 | AC | 29 ms
11,264 KB |
testcase_43 | AC | 31 ms
11,136 KB |
testcase_44 | AC | 30 ms
11,264 KB |
testcase_45 | AC | 29 ms
11,264 KB |
testcase_46 | AC | 28 ms
11,264 KB |
testcase_47 | AC | 29 ms
11,392 KB |
testcase_48 | AC | 28 ms
11,136 KB |
testcase_49 | AC | 28 ms
11,264 KB |
testcase_50 | AC | 29 ms
11,264 KB |
testcase_51 | AC | 28 ms
11,136 KB |
testcase_52 | AC | 28 ms
11,264 KB |
testcase_53 | AC | 27 ms
11,136 KB |
testcase_54 | AC | 27 ms
11,392 KB |
testcase_55 | AC | 28 ms
11,264 KB |
testcase_56 | AC | 28 ms
11,264 KB |
testcase_57 | AC | 28 ms
11,136 KB |
testcase_58 | AC | 28 ms
11,264 KB |
testcase_59 | AC | 28 ms
11,136 KB |
testcase_60 | AC | 28 ms
11,264 KB |
testcase_61 | AC | 27 ms
11,264 KB |
testcase_62 | AC | 27 ms
11,136 KB |
testcase_63 | AC | 27 ms
11,392 KB |
testcase_64 | AC | 27 ms
11,264 KB |
testcase_65 | AC | 27 ms
11,264 KB |
testcase_66 | AC | 27 ms
11,136 KB |
testcase_67 | AC | 27 ms
11,392 KB |
testcase_68 | AC | 28 ms
11,264 KB |
testcase_69 | AC | 27 ms
11,264 KB |
testcase_70 | AC | 28 ms
11,136 KB |
testcase_71 | AC | 28 ms
11,264 KB |
testcase_72 | AC | 28 ms
11,264 KB |
testcase_73 | AC | 28 ms
11,264 KB |
testcase_74 | AC | 28 ms
11,264 KB |
testcase_75 | AC | 29 ms
11,136 KB |
testcase_76 | AC | 30 ms
11,264 KB |
testcase_77 | AC | 28 ms
11,264 KB |
testcase_78 | AC | 28 ms
11,392 KB |
testcase_79 | AC | 29 ms
11,264 KB |
testcase_80 | AC | 28 ms
11,392 KB |
testcase_81 | AC | 28 ms
11,264 KB |
testcase_82 | AC | 28 ms
11,264 KB |
testcase_83 | AC | 28 ms
11,264 KB |
testcase_84 | AC | 30 ms
11,264 KB |
testcase_85 | AC | 28 ms
11,264 KB |
testcase_86 | AC | 29 ms
11,264 KB |
testcase_87 | AC | 31 ms
11,264 KB |
testcase_88 | AC | 29 ms
11,264 KB |
testcase_89 | AC | 28 ms
11,264 KB |
testcase_90 | AC | 32 ms
11,264 KB |
testcase_91 | AC | 30 ms
11,392 KB |
testcase_92 | AC | 29 ms
11,136 KB |
testcase_93 | AC | 27 ms
11,264 KB |
testcase_94 | AC | 28 ms
11,264 KB |
testcase_95 | AC | 27 ms
11,136 KB |
testcase_96 | AC | 27 ms
11,264 KB |
testcase_97 | AC | 27 ms
11,264 KB |
testcase_98 | AC | 27 ms
11,264 KB |
testcase_99 | AC | 27 ms
11,136 KB |
testcase_100 | AC | 28 ms
11,264 KB |
testcase_101 | AC | 30 ms
11,264 KB |
testcase_102 | AC | 28 ms
11,264 KB |
testcase_103 | AC | 29 ms
11,264 KB |
testcase_104 | AC | 29 ms
11,264 KB |
testcase_105 | AC | 28 ms
11,264 KB |
testcase_106 | AC | 29 ms
11,264 KB |
ソースコード
import collections import random def prime_sieve(n): # n以下の素数リスト(エラトステネスの篩) is_prime = [True for i in range(n + 1)] is_prime[0] = False is_prime[1] = False for i in range(4, n + 1, 2): is_prime[i] = False for i in range(3, int(n**0.5 + 1), 2): if is_prime[i]: for j in range(i * i, n + 1, i): is_prime[j] = False return [i for i in range(n + 1) if is_prime[i]] def miller_rabin_test(n, k=100): if n == 2: return True if n < 2 or n & 1 == 0: return False d = (n - 1) >> 1 while d & 1 == 0: d >>= 1 for i in range(k): a = random.randint(1, n - 1) t = d y = pow(a, t, n) while t != n - 1 and y != 1 and y != n - 1: y = pow(y, 2, n) t <<= 1 if y != n - 1 and t & 1 == 0: return False return True N = int(input()) if N <= 46: primes = prime_sieve(N) maze = [i not in primes for i in range(N+1)] for w in range(3, N): dq = collections.deque() dq.append(1) visited = [False] * (N + 1) visited[1] = True while dq: v = dq.popleft() if v == N: break for d in [w, 1, -1, -w]: if 0 < v + d <= N and not visited[v + d] and maze[v + d]: if d in [1, -1] and (v - 1) // w != (v - 1 + d) // w: continue dq.append(v + d) visited[v + d] = True if visited[N]: print(w) exit() else: if N % 8 == 1 and miller_rabin_test(N - 8): print(14) else: print(8)