結果
| 問題 |
No.1018 suffixsuffixsuffix
|
| ユーザー |
maspy
|
| 提出日時 | 2023-06-30 14:10:49 |
| 言語 | Python3 (3.13.1 + numpy 2.2.1 + scipy 1.14.1) |
| 結果 |
AC
|
| 実行時間 | 1,212 ms / 2,000 ms |
| コード長 | 2,221 bytes |
| コンパイル時間 | 260 ms |
| コンパイル使用メモリ | 12,928 KB |
| 実行使用メモリ | 64,772 KB |
| 最終ジャッジ日時 | 2024-07-07 02:04:32 |
| 合計ジャッジ時間 | 36,027 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 34 |
ソースコード
#!/usr/local/bin/python3.8
import sys
read = sys.stdin.read
readline = sys.stdin.readline
readlines = sys.stdin.readlines
import numpy as np
N, M, Q = map(int, readline().split())
S = readline().rstrip()
K = tuple(map(int, read().split()))
def suffix_array(S):
N = len(S)
n = 1
key = np.array([ord(x) for x in S])
for _ in range(N.bit_length() + 1):
ind = key.argsort()
key_sort = key[ind]
# 同じ数はまとめる
cls = np.ones(N, np.int64)
cls[1:] = (key_sort[1:] != key_sort[:-1])
np.cumsum(cls, out=cls)
rank = np.empty_like(cls)
rank[ind] = cls
if n >= N:
break
n *= 2
key = rank * (cls[-1] + 10)
key[:-n // 2] += rank[n // 2:]
return ind, rank - 1
def prime_table(N):
is_prime = np.zeros(N + 1, np.bool_)
is_prime[2] = 1
is_prime[3::2] = 1
for p in range(3, N, 2):
if p * p >= N:
break
if is_prime[p]:
is_prime[p * p:: p + p] = 0
primes = np.where(is_prime)[0]
return is_prime, primes
is_prime, primes = prime_table(10 ** 5 + 10)
# repeated 対策
def to_standard_form(S, M):
for p in primes:
if p > len(S):
break
while True:
L = len(S)
if L % p != 0:
break
dx = L // p
repeated = True
for i in range(1, p):
if S[i * dx: i * dx + dx] != S[:dx]:
repeated = False
break
if not repeated:
break
S = S[:dx]
M *= p
return S, M
S, M = to_standard_form(S, M)
if M == 1:
SA, ISA = suffix_array(S)
K = np.array(K)
answers = 1 + SA[K - 1]
print(' '.join(answers.astype(str)))
exit()
SA, ISA = suffix_array(S * 2)
# 長さを並べる
N = len(S)
SA = (N * 2 - SA)
answer = [0] * Q
i = 0
ind = 1
for x in SA.tolist():
if x <= N:
n = 1
else:
n = M - 1
while i < Q and K[i] < ind + n:
answer[i] = N * (M - K[i] + ind) + 1 - x
i += 1
ind += n
# 長さを持ったので、インデックスに戻す
print(' '.join(map(str, answer)))
maspy