結果
問題 | No.1095 Smallest Kadomatsu Subsequence |
ユーザー | wattaihei |
提出日時 | 2020-06-26 22:01:43 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 1,635 ms / 2,000 ms |
コード長 | 3,583 bytes |
コンパイル時間 | 182 ms |
コンパイル使用メモリ | 82,176 KB |
実行使用メモリ | 263,576 KB |
最終ジャッジ日時 | 2024-07-04 21:10:34 |
合計ジャッジ時間 | 17,111 ms |
ジャッジサーバーID (参考情報) |
judge1 / 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 | 44 ms
52,864 KB |
testcase_01 | AC | 42 ms
52,352 KB |
testcase_02 | AC | 42 ms
52,480 KB |
testcase_03 | AC | 57 ms
61,824 KB |
testcase_04 | AC | 60 ms
61,696 KB |
testcase_05 | AC | 56 ms
61,824 KB |
testcase_06 | AC | 55 ms
61,568 KB |
testcase_07 | AC | 54 ms
61,440 KB |
testcase_08 | AC | 58 ms
62,080 KB |
testcase_09 | AC | 56 ms
61,824 KB |
testcase_10 | AC | 58 ms
62,080 KB |
testcase_11 | AC | 58 ms
62,720 KB |
testcase_12 | AC | 57 ms
61,824 KB |
testcase_13 | AC | 192 ms
79,360 KB |
testcase_14 | AC | 149 ms
78,848 KB |
testcase_15 | AC | 204 ms
80,384 KB |
testcase_16 | AC | 195 ms
79,744 KB |
testcase_17 | AC | 210 ms
80,000 KB |
testcase_18 | AC | 188 ms
79,360 KB |
testcase_19 | AC | 205 ms
79,616 KB |
testcase_20 | AC | 182 ms
79,488 KB |
testcase_21 | AC | 201 ms
79,488 KB |
testcase_22 | AC | 161 ms
78,976 KB |
testcase_23 | AC | 1,506 ms
262,188 KB |
testcase_24 | AC | 1,635 ms
263,576 KB |
testcase_25 | AC | 1,483 ms
263,064 KB |
testcase_26 | AC | 1,483 ms
262,408 KB |
testcase_27 | AC | 1,485 ms
262,432 KB |
testcase_28 | AC | 858 ms
263,200 KB |
testcase_29 | AC | 812 ms
263,192 KB |
testcase_30 | AC | 1,175 ms
261,928 KB |
testcase_31 | AC | 1,381 ms
262,044 KB |
testcase_32 | AC | 1,179 ms
262,180 KB |
ソースコード
from bisect import bisect_right, bisect_left # instead of AVLTree class BITbisect(): def __init__(self, InputProbNumbers): # 座圧 self.ind_to_co = [-10**18] self.co_to_ind = {} for ind, num in enumerate(sorted(list(set(InputProbNumbers)))): self.ind_to_co.append(num) self.co_to_ind[num] = ind+1 self.max = len(self.co_to_ind) self.data = [0]*(self.max+1) def __str__(self): retList = [] for i in range(1, self.max+1): x = self.ind_to_co[i] if self.count(x): c = self.count(x) for _ in range(c): retList.append(x) return "[" + ", ".join([str(a) for a in retList]) + "]" def __getitem__(self, key): key += 1 s = 0 ind = 0 l = self.max.bit_length() for i in reversed(range(l)): if ind + (1<<i) <= self.max: if s + self.data[ind+(1<<i)] < key: s += self.data[ind+(1<<i)] ind += (1<<i) if ind == self.max or key < 0: raise IndexError("BIT index out of range") return self.ind_to_co[ind+1] def __len__(self): return self._query_sum(self.max) def __contains__(self, num): if not num in self.co_to_ind: return False return self.count(num) > 0 # 0からiまでの区間和 # 左に進んでいく def _query_sum(self, i): s = 0 while i > 0: s += self.data[i] i -= i & -i return s # i番目の要素にxを足す # 上に登っていく def _add(self, i, x): while i <= self.max: self.data[i] += x i += i & -i # 値xを挿入 def push(self, x): if not x in self.co_to_ind: raise KeyError("The pushing number didnt initialized") self._add(self.co_to_ind[x], 1) # 値xを削除 def delete(self, x): if not x in self.co_to_ind: raise KeyError("The deleting number didnt initialized") if self.count(x) <= 0: raise ValueError("The deleting number doesnt exist") self._add(self.co_to_ind[x], -1) # 要素xの個数 def count(self, x): return self._query_sum(self.co_to_ind[x]) - self._query_sum(self.co_to_ind[x]-1) # 値xを超える最低ind def bisect_right(self, x): if x in self.co_to_ind: i = self.co_to_ind[x] else: i = bisect_right(self.ind_to_co, x) - 1 return self._query_sum(i) # 値xを下回る最低ind def bisect_left(self, x): if x in self.co_to_ind: i = self.co_to_ind[x] else: i = bisect_left(self.ind_to_co, x) if i == 1: return 0 return self._query_sum(i-1) import sys input = sys.stdin.readline INF = 10**18 N = int(input()) A = list(map(int, input().split())) Bit1 = BITbisect(A) Bit2 = BITbisect(A) ans = INF for a in A: Bit2.push(a) for i, a in enumerate(A): Bit2.delete(a) if i == 0 or i == N-1: Bit1.push(a) continue c1 = Bit1[0] c2 = Bit2[0] if a > c1 and a > c2: ans = min(ans, a+c1+c2) ind1 = Bit1.bisect_left(a) ind2 = Bit2.bisect_left(a) if ind1 < len(Bit1) and ind2 < len(Bit2): b1 = Bit1[ind1] b2 = Bit2[ind2] ans = min(ans, a + b1 + b2) Bit1.push(a) if ans == INF: print(-1) else: print(ans)