結果
問題 | No.2642 Don't cut line! |
ユーザー | rlangevin |
提出日時 | 2024-02-22 12:04:14 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 804 ms / 4,000 ms |
コード長 | 4,051 bytes |
コンパイル時間 | 459 ms |
コンパイル使用メモリ | 81,572 KB |
実行使用メモリ | 144,252 KB |
最終ジャッジ日時 | 2024-02-22 12:04:40 |
合計ジャッジ時間 | 22,957 ms |
ジャッジサーバーID (参考情報) |
judge12 / judge15 |
(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 | 32 ms
53,460 KB |
testcase_01 | AC | 798 ms
144,252 KB |
testcase_02 | AC | 742 ms
143,616 KB |
testcase_03 | AC | 787 ms
143,868 KB |
testcase_04 | AC | 770 ms
143,744 KB |
testcase_05 | AC | 749 ms
143,104 KB |
testcase_06 | AC | 598 ms
95,336 KB |
testcase_07 | AC | 530 ms
95,444 KB |
testcase_08 | AC | 550 ms
95,424 KB |
testcase_09 | AC | 516 ms
95,468 KB |
testcase_10 | AC | 537 ms
95,808 KB |
testcase_11 | AC | 515 ms
95,448 KB |
testcase_12 | AC | 507 ms
95,912 KB |
testcase_13 | AC | 518 ms
95,412 KB |
testcase_14 | AC | 508 ms
95,560 KB |
testcase_15 | AC | 571 ms
96,084 KB |
testcase_16 | AC | 640 ms
142,884 KB |
testcase_17 | AC | 744 ms
134,508 KB |
testcase_18 | AC | 804 ms
140,748 KB |
testcase_19 | AC | 577 ms
123,408 KB |
testcase_20 | AC | 647 ms
104,808 KB |
testcase_21 | AC | 385 ms
97,716 KB |
testcase_22 | AC | 498 ms
125,900 KB |
testcase_23 | AC | 780 ms
142,572 KB |
testcase_24 | AC | 544 ms
110,764 KB |
testcase_25 | AC | 594 ms
108,368 KB |
testcase_26 | AC | 613 ms
100,128 KB |
testcase_27 | AC | 551 ms
118,888 KB |
testcase_28 | AC | 672 ms
136,452 KB |
testcase_29 | AC | 695 ms
102,820 KB |
testcase_30 | AC | 627 ms
107,116 KB |
testcase_31 | AC | 597 ms
128,172 KB |
testcase_32 | AC | 585 ms
105,284 KB |
testcase_33 | AC | 31 ms
53,460 KB |
testcase_34 | AC | 30 ms
53,460 KB |
testcase_35 | AC | 30 ms
53,460 KB |
ソースコード
import sys input = sys.stdin.readline class UnionFind(object): def __init__(self, n=1): self.par = [i for i in range(n)] self.rank = [0 for _ in range(n)] self.size = [1 for _ in range(n)] def find(self, x): if self.par[x] == x: return x else: self.par[x] = self.find(self.par[x]) return self.par[x] def union(self, x, y): x = self.find(x) y = self.find(y) if x != y: if self.rank[x] < self.rank[y]: x, y = y, x if self.rank[x] == self.rank[y]: self.rank[x] += 1 self.par[y] = x self.size[x] += self.size[y] def is_same(self, x, y): return self.find(x) == self.find(y) def get_size(self, x): x = self.find(x) return self.size[x] class LowestCommonAncestor: def __init__(self, n): self._n = n self._logn = 0 v = 1 while v <= self._n: v *= 2 self._logn += 1 self._depth = [0] * self._n self._distance = [0] * self._n self._ancestor = [[-1] * self._n for _ in range(self._logn)] self.dp = [[-1] * self._n for _ in range(self._logn)] self._G = [[] for i in range(self._n)] def add_edge(self, u, v, w=1): self._G[u].append((v, w)) self._G[v].append((u, w)) def build(self, root=0): stack = [root] while stack: cur = stack.pop() for nex, w in self._G[cur]: if self._ancestor[0][nex] != cur and self._ancestor[0][cur] != nex: self._ancestor[0][nex] = cur self._depth[nex] = self._depth[cur] + 1 self._distance[nex] = self._distance[cur] + w stack.append(nex) self.dp[0][nex] = w for k in range(1, self._logn): for i in range(self._n): if self._ancestor[k - 1][i] == -1: self._ancestor[k][i] = -1 self.dp[k][i] = self.dp[k-1][i] else: self._ancestor[k][i] = self._ancestor[k - 1][self._ancestor[k - 1][i]] self.dp[k][i] = max(self.dp[k-1][i], self.dp[k-1][self._ancestor[k - 1][i]]) def lca(self, u, v): if self._depth[u] > self._depth[v]: u, v = v, u for k in range(self._logn - 1, -1, -1): if ((self._depth[v] - self._depth[u]) >> k) & 1: v = self._ancestor[k][v] if u == v: return u for k in range(self._logn - 1, -1, -1): if self._ancestor[k][u] != self._ancestor[k][v]: u = self._ancestor[k][u] v = self._ancestor[k][v] return self._ancestor[0][u] def distance(self, u, v): return self._distance[u] + self._distance[v] - 2 * self._distance[self.lca(u, v)] def query(self, a, b): lca = self.lca(a, b) return max(self.max_edge(a, self._depth[a] - self._depth[lca]) , self.max_edge(b, self._depth[b] - self._depth[lca])) def max_edge(self, a, d): now = -10 ** 18 for i in range(self._logn): if (d >> i) & 1: now = max(now, self.dp[i][a]) a = self._ancestor[i][a] return now N, M, cost = map(int, input().split()) U = UnionFind(N) used = [0] * M Edge = [] for i in range(M): A, B, C, p = map(int, input().split()) A, B = A - 1, B - 1 Edge.append((C, A, B, p, i)) Edge.sort() base = 0 T = LowestCommonAncestor(N) for c, a, b, p, i in Edge: if U.is_same(a, b): continue used[i] = 1 U.union(a, b) T.add_edge(a, b, c) base += c if base > cost: print(-1) exit() ans = -1 T.build(0) for c, a, b, p, i in Edge: if used[i]: ans = max(ans, p) continue if base + c - T.query(a, b) <= cost: ans = max(ans, p) print(ans)