結果
問題 | No.416 旅行会社 |
ユーザー | Navier_Boltzmann |
提出日時 | 2023-06-17 13:19:22 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 2,623 ms / 4,000 ms |
コード長 | 2,703 bytes |
コンパイル時間 | 669 ms |
コンパイル使用メモリ | 82,440 KB |
実行使用メモリ | 304,372 KB |
最終ジャッジ日時 | 2024-06-25 04:20:18 |
合計ジャッジ時間 | 24,115 ms |
ジャッジサーバーID (参考情報) |
judge3 / 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 | 819 ms
254,784 KB |
testcase_01 | AC | 47 ms
56,640 KB |
testcase_02 | AC | 45 ms
56,272 KB |
testcase_03 | AC | 47 ms
56,272 KB |
testcase_04 | AC | 47 ms
58,048 KB |
testcase_05 | AC | 53 ms
64,252 KB |
testcase_06 | AC | 56 ms
66,808 KB |
testcase_07 | AC | 130 ms
78,236 KB |
testcase_08 | AC | 317 ms
82,008 KB |
testcase_09 | AC | 574 ms
92,844 KB |
testcase_10 | AC | 855 ms
255,420 KB |
testcase_11 | AC | 700 ms
219,756 KB |
testcase_12 | AC | 729 ms
228,872 KB |
testcase_13 | AC | 660 ms
229,264 KB |
testcase_14 | AC | 2,623 ms
277,940 KB |
testcase_15 | AC | 2,516 ms
279,436 KB |
testcase_16 | AC | 2,245 ms
304,372 KB |
testcase_17 | AC | 2,381 ms
284,820 KB |
testcase_18 | AC | 2,464 ms
277,420 KB |
testcase_19 | AC | 2,022 ms
266,224 KB |
testcase_20 | AC | 1,961 ms
232,784 KB |
ソースコード
from collections import * from itertools import * from functools import * from heapq import * import sys,math input = sys.stdin.readline class DSU: def __init__(self, n): self._n = n self.parent_or_size = [-1] * n def merge(self, a, b): assert 0 <= a < self._n assert 0 <= b < self._n x, y = self.leader(a), self.leader(b) if x == y: return x if -self.parent_or_size[x] < -self.parent_or_size[y]: x, y = y, x self.parent_or_size[x] += self.parent_or_size[y] self.parent_or_size[y] = x return x def same(self, a, b): assert 0 <= a < self._n assert 0 <= b < self._n return self.leader(a) == self.leader(b) def leader(self, a): assert 0 <= a < self._n if self.parent_or_size[a] < 0: return a self.parent_or_size[a] = self.leader(self.parent_or_size[a]) return self.parent_or_size[a] def size(self, a): assert 0 <= a < self._n return -self.parent_or_size[self.leader(a)] def groups(self): leader_buf = [self.leader(i) for i in range(self._n)] result = [[] for _ in range(self._n)] for i in range(self._n): result[leader_buf[i]].append(i) return [r for r in result if r != []] N,M,Q = map(int,input().split()) AB = [tuple(map(int,input().split())) for _ in range(M)] CD = [tuple(map(int,input().split())) for _ in range(Q)] X = set(CD) D = DSU(N+1) Y = [] for a,b in AB: if (a,b) in X: continue Y.append((a,b)) D.merge(a,b) check = defaultdict(lambda:set()) ok = defaultdict(lambda:Q-1) ng = defaultdict(lambda:-1) mid = defaultdict(lambda:(Q-1)//2) ans = defaultdict(lambda:-2) F = set() S = set([i for i in range(2,N+1)]) for i in range(2,N+1): if D.same(1,i): ans[i]=-1 F.add(i) S.discard(i) for c,d in CD: D.merge(c,d) for i in range(2,N+1): if i in F: continue if not D.same(1,i): S.discard(i) F.add(i) ans[i] = 0 for s in S: check[(Q-1)//2].add(s) cnt = 0 n = len(S) while cnt!=n: D = DSU(N+1) for a,b in Y: D.merge(a,b) for i in range(Q): c,d = CD[-1-i] D.merge(c,d) for s in check[i]: if D.same(1,s): ok[s] = i else: ng[s] = i if ok[s]-ng[s]==1: cnt += 1 continue mid[s] = (ok[s]+ng[s])//2 check[mid[s]].add(s) check[i] = set() for s in S: ans[s] = Q - ok[s] for i in range(2,N+1): print(ans[i])