結果
問題 | No.2204 Palindrome Splitting (No Rearrangement ver.) |
ユーザー | H20 |
提出日時 | 2023-02-03 22:07:50 |
言語 | PyPy3 (7.3.15) |
結果 |
TLE
|
実行時間 | - |
コード長 | 2,475 bytes |
コンパイル時間 | 168 ms |
コンパイル使用メモリ | 82,048 KB |
実行使用メモリ | 156,032 KB |
最終ジャッジ日時 | 2024-07-02 20:07:26 |
合計ジャッジ時間 | 10,308 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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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 | 46 ms
54,016 KB |
testcase_01 | AC | 46 ms
54,016 KB |
testcase_02 | AC | 46 ms
54,272 KB |
testcase_03 | AC | 170 ms
77,568 KB |
testcase_04 | AC | 96 ms
73,088 KB |
testcase_05 | AC | 92 ms
73,216 KB |
testcase_06 | AC | 222 ms
77,312 KB |
testcase_07 | AC | 201 ms
77,312 KB |
testcase_08 | AC | 192 ms
77,312 KB |
testcase_09 | AC | 198 ms
77,568 KB |
testcase_10 | AC | 217 ms
77,184 KB |
testcase_11 | AC | 193 ms
77,312 KB |
testcase_12 | AC | 216 ms
77,440 KB |
testcase_13 | AC | 218 ms
77,440 KB |
testcase_14 | AC | 223 ms
77,440 KB |
testcase_15 | AC | 206 ms
77,184 KB |
testcase_16 | AC | 129 ms
73,856 KB |
testcase_17 | AC | 153 ms
77,312 KB |
testcase_18 | AC | 219 ms
77,440 KB |
testcase_19 | AC | 219 ms
77,824 KB |
testcase_20 | AC | 217 ms
77,312 KB |
testcase_21 | AC | 215 ms
77,440 KB |
testcase_22 | AC | 217 ms
77,440 KB |
testcase_23 | AC | 215 ms
77,568 KB |
testcase_24 | AC | 217 ms
77,440 KB |
testcase_25 | AC | 221 ms
77,312 KB |
testcase_26 | AC | 221 ms
77,440 KB |
testcase_27 | AC | 197 ms
77,216 KB |
testcase_28 | AC | 218 ms
77,312 KB |
testcase_29 | AC | 216 ms
77,824 KB |
testcase_30 | AC | 46 ms
53,888 KB |
testcase_31 | AC | 45 ms
54,016 KB |
testcase_32 | AC | 594 ms
156,032 KB |
testcase_33 | AC | 216 ms
77,312 KB |
testcase_34 | AC | 46 ms
54,400 KB |
testcase_35 | TLE | - |
ソースコード
# UnionFind 参考は以下のサイト # https://note.nkmk.me/python-union-find/ from collections import defaultdict class UnionFind(): def __init__(self, n): self.n = n self.parents = [-1] * n def find(self, x): if self.parents[x] < 0: return x else: self.parents[x] = self.find(self.parents[x]) return self.parents[x] def union(self, x, y): x = self.find(x) y = self.find(y) if x == y: return if self.parents[x] > self.parents[y]: x, y = y, x self.parents[x] += self.parents[y] self.parents[y] = x def size(self, x): return -self.parents[self.find(x)] def same(self, x, y): return self.find(x) == self.find(y) def members(self, x): root = self.find(x) return [i for i in range(self.n) if self.find(i) == root] def roots(self): return [i for i, x in enumerate(self.parents) if x < 0] def group_count(self): return len(self.roots()) def all_group_members(self): group_members = defaultdict(list) for member in range(self.n): group_members[self.find(member)].append(member) return group_members def __str__(self): return '\n'.join(f'{r}: {m}' for r, m in self.all_group_members().items()) def is_ok(x): uf = UnionFind(N+1) for i,l in enumerate(L): for ll in l: if x<=ll: uf.union(i,i+ll) return uf.same(0,N) def meguru_bisect(ng, ok): while (abs(ok - ng) > 1): mid = (ok + ng) // 2 if is_ok(mid): ok = mid else: ng = mid return ok # 非クラス版 base = 37; mod = 10**9 + 9 pw = None def rolling_hash(s): l = len(s) h = [0]*(l + 1) v = 0 for i in range(l): h[i+1] = v = (v * base + ord(s[i])) % mod return h # RH前に、必要な長さの最大値分のpow-tableを計算しておく def setup_pw(l): global pw pw = [1]*(l + 1) v = 1 for i in range(l): pw[i+1] = v = v * base % mod def get(h, l, r): return (h[r] - h[l] * pw[r-l]) % mod S = list(input()) N = len(S) SR = S[::-1] setup_pw(N+5) ST = rolling_hash(S) SRT = rolling_hash(SR) L = [[] for _ in range(N)] for i in range(N): for j in range(1,N-i+1): if get(ST,i,i+j)==get(SRT,N-i-j,N-i): L[i].append(j) print(meguru_bisect(N+1,1))