結果
問題 | No.2642 Don't cut line! |
ユーザー | chineristAC |
提出日時 | 2024-02-19 22:25:04 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 648 ms / 4,000 ms |
コード長 | 3,069 bytes |
コンパイル時間 | 218 ms |
コンパイル使用メモリ | 82,332 KB |
実行使用メモリ | 157,568 KB |
最終ジャッジ日時 | 2024-09-29 03:35:06 |
合計ジャッジ時間 | 15,870 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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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 | 42 ms
58,028 KB |
testcase_01 | AC | 585 ms
155,268 KB |
testcase_02 | AC | 572 ms
148,864 KB |
testcase_03 | AC | 552 ms
157,568 KB |
testcase_04 | AC | 563 ms
157,052 KB |
testcase_05 | AC | 551 ms
153,988 KB |
testcase_06 | AC | 327 ms
104,852 KB |
testcase_07 | AC | 324 ms
105,884 KB |
testcase_08 | AC | 320 ms
105,220 KB |
testcase_09 | AC | 317 ms
105,484 KB |
testcase_10 | AC | 347 ms
105,740 KB |
testcase_11 | AC | 334 ms
104,976 KB |
testcase_12 | AC | 334 ms
106,124 KB |
testcase_13 | AC | 323 ms
105,484 KB |
testcase_14 | AC | 328 ms
105,708 KB |
testcase_15 | AC | 337 ms
106,112 KB |
testcase_16 | AC | 439 ms
111,512 KB |
testcase_17 | AC | 526 ms
146,552 KB |
testcase_18 | AC | 516 ms
140,564 KB |
testcase_19 | AC | 436 ms
133,732 KB |
testcase_20 | AC | 434 ms
113,232 KB |
testcase_21 | AC | 306 ms
98,312 KB |
testcase_22 | AC | 386 ms
103,328 KB |
testcase_23 | AC | 648 ms
156,052 KB |
testcase_24 | AC | 426 ms
111,944 KB |
testcase_25 | AC | 436 ms
109,608 KB |
testcase_26 | AC | 459 ms
107,776 KB |
testcase_27 | AC | 445 ms
113,732 KB |
testcase_28 | AC | 615 ms
138,524 KB |
testcase_29 | AC | 456 ms
107,872 KB |
testcase_30 | AC | 437 ms
109,796 KB |
testcase_31 | AC | 519 ms
125,212 KB |
testcase_32 | AC | 444 ms
109,020 KB |
testcase_33 | AC | 39 ms
57,960 KB |
testcase_34 | AC | 40 ms
57,068 KB |
testcase_35 | AC | 41 ms
57,504 KB |
ソースコード
import sys from itertools import permutations from heapq import heappop,heappush from collections import deque import random import bisect input = lambda :sys.stdin.readline().rstrip() mi = lambda :map(int,input().split()) li = lambda :list(mi()) class UnionFindVerSize(): def __init__(self, N): self._parent = [n for n in range(0, N)] self._size = [1] * N self.group = N def find_root(self, x): if self._parent[x] == x: return x self._parent[x] = self.find_root(self._parent[x]) return self._parent[x] def unite(self, x, y): gx = self.find_root(x) gy = self.find_root(y) if gx == gy: return self.group -= 1 if self._size[gx] < self._size[gy]: self._parent[gx] = gy self._size[gy] += self._size[gx] else: self._parent[gy] = gx self._size[gx] += self._size[gy] def get_size(self, x): return self._size[self.find_root(x)] def is_same_group(self, x, y): return self.find_root(x) == self.find_root(y) def solve(N,M,C,Edge): Edge.sort(key=lambda e:e[2]) uf = UnionFindVerSize(N) MST_edge = [[] for v in range(N)] total_cost = 0 res = -1 rest_Edge = [] for u,v,w,p in Edge: if not uf.is_same_group(u,v): uf.unite(u,v) MST_edge[u].append((v,w)) MST_edge[v].append((u,w)) total_cost += w res = max(res,p) else: rest_Edge.append((u,v,w,p)) if total_cost > C: return -1 K = 17 parent = [[(-1,-1)]*N for i in range(K)] dep = [0] * N deq = deque([0]) while deq: v = deq.popleft() for nv,w in MST_edge[v]: if nv == parent[0][v][0]: continue parent[0][nv] = (v,w) dep[nv] = dep[v] + 1 deq.append(nv) for k in range(1,K): for v in range(N): pv,nw = parent[k-1][v] if pv!=-1: ppv,nnw = parent[k-1][pv] parent[k][v] = (ppv,max(nnw,nw)) def maxi_w_on_path(u,v): if dep[u] > dep[v]: u,v = v,u diff = dep[v] - dep[u] res = -1 for k in range(K)[::-1]: if diff>>k & 1: pv,w = parent[k][v] res = max(res,w) v = pv if u == v: return res for k in range(K)[::-1]: pu,uw = parent[k][u] pv,vw = parent[k][v] if pu!=pv: u,v = pu,pv res = max(res,uw,vw) pu,uw = parent[0][u] pv,vw = parent[0][v] return max(res,uw,vw) for u,v,w,p in rest_Edge: tmp_cost = total_cost - maxi_w_on_path(u,v) + w if tmp_cost <= C: res = max(res,p) return res N,M,C = mi() Edge = [] for _ in range(M): u,v,w,p = mi() Edge.append((u-1,v-1,w,p)) print(solve(N,M,C,Edge))