結果

問題 No.308 素数は通れません
ユーザー mkawa2mkawa2
提出日時 2023-03-21 17:47:06
言語 PyPy3
(7.3.15)
結果
WA  
実行時間 -
コード長 3,133 bytes
コンパイル時間 256 ms
コンパイル使用メモリ 82,316 KB
実行使用メモリ 62,488 KB
最終ジャッジ日時 2024-09-18 14:25:24
合計ジャッジ時間 6,678 ms
ジャッジサーバーID
(参考情報)
judge3 / judge4
このコードへのチャレンジ
(要ログイン)

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 42 ms
56,412 KB
testcase_01 AC 43 ms
55,632 KB
testcase_02 AC 45 ms
56,360 KB
testcase_03 AC 42 ms
55,832 KB
testcase_04 AC 39 ms
55,408 KB
testcase_05 AC 38 ms
56,260 KB
testcase_06 AC 39 ms
55,800 KB
testcase_07 AC 38 ms
55,836 KB
testcase_08 AC 39 ms
56,264 KB
testcase_09 AC 39 ms
55,684 KB
testcase_10 AC 36 ms
56,600 KB
testcase_11 AC 37 ms
55,244 KB
testcase_12 AC 37 ms
56,904 KB
testcase_13 AC 37 ms
56,096 KB
testcase_14 AC 39 ms
56,364 KB
testcase_15 AC 38 ms
55,896 KB
testcase_16 AC 39 ms
54,992 KB
testcase_17 AC 41 ms
55,408 KB
testcase_18 AC 39 ms
55,488 KB
testcase_19 AC 42 ms
55,584 KB
testcase_20 AC 41 ms
55,084 KB
testcase_21 AC 42 ms
55,028 KB
testcase_22 AC 40 ms
55,780 KB
testcase_23 AC 39 ms
55,000 KB
testcase_24 AC 39 ms
56,296 KB
testcase_25 AC 40 ms
56,216 KB
testcase_26 AC 38 ms
56,464 KB
testcase_27 AC 38 ms
55,152 KB
testcase_28 AC 39 ms
55,432 KB
testcase_29 AC 41 ms
55,908 KB
testcase_30 AC 40 ms
55,272 KB
testcase_31 AC 39 ms
56,304 KB
testcase_32 AC 39 ms
55,564 KB
testcase_33 AC 38 ms
56,108 KB
testcase_34 AC 39 ms
56,112 KB
testcase_35 AC 40 ms
55,088 KB
testcase_36 AC 40 ms
56,400 KB
testcase_37 AC 40 ms
56,584 KB
testcase_38 AC 40 ms
56,300 KB
testcase_39 AC 40 ms
55,336 KB
testcase_40 AC 38 ms
55,824 KB
testcase_41 AC 37 ms
55,424 KB
testcase_42 AC 38 ms
56,400 KB
testcase_43 AC 39 ms
55,476 KB
testcase_44 AC 38 ms
55,888 KB
testcase_45 AC 40 ms
55,480 KB
testcase_46 AC 41 ms
55,392 KB
testcase_47 AC 40 ms
55,244 KB
testcase_48 AC 40 ms
55,572 KB
testcase_49 AC 40 ms
55,440 KB
testcase_50 AC 40 ms
56,100 KB
testcase_51 AC 39 ms
56,200 KB
testcase_52 AC 42 ms
55,376 KB
testcase_53 AC 41 ms
55,492 KB
testcase_54 AC 39 ms
55,572 KB
testcase_55 AC 38 ms
55,748 KB
testcase_56 AC 40 ms
56,332 KB
testcase_57 AC 40 ms
56,836 KB
testcase_58 AC 39 ms
57,080 KB
testcase_59 AC 41 ms
56,344 KB
testcase_60 AC 39 ms
55,912 KB
testcase_61 AC 40 ms
56,768 KB
testcase_62 AC 39 ms
55,544 KB
testcase_63 AC 40 ms
55,316 KB
testcase_64 AC 41 ms
56,236 KB
testcase_65 AC 41 ms
55,556 KB
testcase_66 AC 39 ms
54,748 KB
testcase_67 AC 40 ms
55,144 KB
testcase_68 AC 41 ms
59,772 KB
testcase_69 AC 45 ms
58,088 KB
testcase_70 AC 44 ms
59,520 KB
testcase_71 AC 42 ms
59,568 KB
testcase_72 AC 44 ms
59,600 KB
testcase_73 AC 44 ms
58,864 KB
testcase_74 AC 45 ms
60,896 KB
testcase_75 AC 42 ms
58,532 KB
testcase_76 WA -
testcase_77 AC 37 ms
55,624 KB
testcase_78 AC 39 ms
55,884 KB
testcase_79 AC 37 ms
55,960 KB
testcase_80 WA -
testcase_81 WA -
testcase_82 AC 37 ms
56,340 KB
testcase_83 AC 38 ms
55,768 KB
testcase_84 WA -
testcase_85 AC 43 ms
57,344 KB
testcase_86 WA -
testcase_87 WA -
testcase_88 AC 40 ms
55,648 KB
testcase_89 AC 39 ms
56,392 KB
testcase_90 WA -
testcase_91 AC 41 ms
59,444 KB
testcase_92 AC 42 ms
58,100 KB
testcase_93 AC 43 ms
60,508 KB
testcase_94 AC 42 ms
59,200 KB
testcase_95 AC 42 ms
59,580 KB
testcase_96 AC 45 ms
55,088 KB
testcase_97 AC 41 ms
58,688 KB
testcase_98 AC 41 ms
58,536 KB
testcase_99 AC 41 ms
58,344 KB
testcase_100 AC 41 ms
59,156 KB
testcase_101 WA -
testcase_102 AC 44 ms
59,792 KB
testcase_103 AC 44 ms
58,288 KB
testcase_104 AC 46 ms
58,584 KB
testcase_105 AC 44 ms
59,112 KB
testcase_106 AC 41 ms
58,452 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

import sys

# sys.setrecursionlimit(200005)
int1 = lambda x: int(x)-1
pDB = lambda *x: print(*x, end="\n", file=sys.stderr)
p2D = lambda x: print(*x, sep="\n", end="\n\n", file=sys.stderr)
def II(): return int(sys.stdin.readline())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]
def LI1(): return list(map(int1, sys.stdin.readline().split()))
def LLI1(rows_number): return [LI1() for _ in range(rows_number)]
def SI(): return sys.stdin.readline().rstrip()

dij = [(0, 1), (-1, 0), (0, -1), (1, 0)]
# dij = [(0, 1), (-1, 0), (0, -1), (1, 0), (1, 1), (1, -1), (-1, 1), (-1, -1)]
inf = (1 << 63)-1
# inf = (1 << 31)-1
# md = 10**9+7
md = 998244353

from random import randrange

def is_prime(n):
    # K...信頼度
    K = 20
    if n == 2: return True
    if n == 1 or n & 1 == 0: return False
    d = (n-1) >> 1
    while d & 1 == 0: d >>= 1
    for k in range(K):
        a = randrange(1, n)
        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

primes = set(
    [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107,
     109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229,
     233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 317, 331, 337, 347, 349, 353, 359,
     367, 373, 379, 383, 389, 397, 401, 409, 419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491,
     499])

def ok(w):
    def push(ij):
        if fin[ij]: return
        fin[ij] = 1
        st.append(ij)

    fin = [0]*n
    for p in primes:
        if p-1 >= n: break
        fin[p-1] = 1
    fin[0] = 1
    st = [0]
    while st:
        ij = st.pop()
        if ij == n-1: return True
        i, j = divmod(ij, w)
        if i: push(ij-w)
        if j: push(ij-1)
        if ij+w < n: push(ij+w)
        if j+1 < w: push(ij+1)
    return False

def ok1(w):
    def push(ij):
        if ij in fin: return
        fin.add(ij)
        if ij+1 in primes: return
        st.append(ij)

    fin = set()
    st = [0]
    while st:
        ij = st.pop()
        i, j = divmod(ij, w)
        if i > d or j > d: return True
        if i: push(ij-w)
        if j: push(ij-1)
        if ij+w < n: push(ij+w)
        if j+1 < w: push(ij+1)

def ok2(w):
    def push(ij):
        if ij in fin: return
        fin.add(ij)
        if is_prime(ij+1): return
        st.append(ij)

    fin = set()
    gi, gj = divmod(n-1, w)
    st = [n-1]
    while st:
        ij = st.pop()
        i, j = divmod(ij, w)
        if abs(i-gi) > d or abs(j-gj) > d: return True
        if i: push(ij-w)
        if j: push(ij-1)
        if ij+w < n: push(ij+w)
        if j+1 < w: push(ij+1)

d = 9
n = II()
if n < 500:
    for w in range(3, n+1):
        if ok(w):
            print(w)
            exit()
else:
    for w in range(8, 1000):
        if ok1(w) and ok2(w):
            print(w)
            exit()
0