結果
問題 | No.1449 新プロランド |
ユーザー | terasa |
提出日時 | 2022-11-03 16:20:55 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 1,334 ms / 2,000 ms |
コード長 | 2,663 bytes |
コンパイル時間 | 382 ms |
コンパイル使用メモリ | 82,176 KB |
実行使用メモリ | 246,792 KB |
最終ジャッジ日時 | 2024-06-06 11:12:16 |
合計ジャッジ時間 | 16,559 ms |
ジャッジサーバーID (参考情報) |
judge2 / 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 | 98 ms
80,788 KB |
testcase_01 | AC | 162 ms
86,400 KB |
testcase_02 | AC | 236 ms
97,312 KB |
testcase_03 | AC | 154 ms
86,456 KB |
testcase_04 | AC | 183 ms
86,888 KB |
testcase_05 | AC | 1,334 ms
246,792 KB |
testcase_06 | AC | 801 ms
179,712 KB |
testcase_07 | AC | 557 ms
157,236 KB |
testcase_08 | AC | 979 ms
217,380 KB |
testcase_09 | AC | 506 ms
145,264 KB |
testcase_10 | AC | 591 ms
184,744 KB |
testcase_11 | AC | 413 ms
175,184 KB |
testcase_12 | AC | 949 ms
205,436 KB |
testcase_13 | AC | 527 ms
138,704 KB |
testcase_14 | AC | 386 ms
167,900 KB |
testcase_15 | AC | 907 ms
195,052 KB |
testcase_16 | AC | 646 ms
154,540 KB |
testcase_17 | AC | 750 ms
168,340 KB |
testcase_18 | AC | 108 ms
81,536 KB |
testcase_19 | AC | 169 ms
122,112 KB |
testcase_20 | AC | 91 ms
80,256 KB |
testcase_21 | AC | 468 ms
163,608 KB |
testcase_22 | AC | 237 ms
92,056 KB |
testcase_23 | AC | 577 ms
202,968 KB |
testcase_24 | AC | 405 ms
120,456 KB |
testcase_25 | AC | 300 ms
101,892 KB |
testcase_26 | AC | 138 ms
84,480 KB |
testcase_27 | AC | 1,206 ms
241,632 KB |
testcase_28 | AC | 728 ms
172,104 KB |
ソースコード
from typing import List, Tuple, Optional import sys import itertools import heapq import bisect from collections import deque, defaultdict from functools import lru_cache, cmp_to_key input = sys.stdin.readline # for AtCoder Easy test if __file__ != 'prog.py': # sys.setrecursionlimit(10 ** 6) pass def readints(): return map(int, input().split()) def readlist(): return list(readints()) def readstr(): return input().rstrip() class Dijkstra: def __init__(self, N: int, E: List[List[Tuple[int, int]]], start: int = 0, inf: int = 1 << 50): self.N = N self.E = E self.start = start self.inf = inf self.C = [self.inf] * N self.prev = [None] * N self._calculate() def get_cost(self, i: int) -> Optional[int]: """return cost to i-th vertex. return inf if the vertex is unreachable.""" return self.C[i] def get_path(self, i) -> Optional[List[int]]: """return shortest path to i-th vertex if reachable otherwise None""" if not self.reachable(i): return None p = [] cur = i while cur is not None: p.append(cur) cur = self.prev[cur] p.reverse() return p def reachable(self, i) -> bool: """return whether i-th vertex is reachable from start""" return self.C[i] < self.inf def _calculate(self) -> None: h = [(0, self.start)] self.C[self.start] = 0 visited = [False] * self.N while h: _, v = heapq.heappop(h) if visited[v] is True: continue visited[v] = True for c, d in self.E[v]: if self.C[d] > self.C[v] + c: self.C[d] = self.C[v] + c self.prev[d] = v heapq.heappush(h, (self.C[d], d)) N, M = readints() edges = [tuple(readints()) for _ in range(M)] T = readlist() L = 10000 E = [[] for _ in range(N * (L + 1))] for a, b, c in edges: a -= 1 b -= 1 def h(i, t): return i * (L + 1) + t for j in range(L + 1): if j + T[a] > L: break if j + T[a] == 0: continue cost = T[a] + c // (j + T[a]) E[h(a, j)].append((cost, h(b, j + T[a]))) for j in range(L + 1): if j + T[b] > L: break if j + T[b] == 0: continue cost = T[b] + c // (j + T[b]) E[h(b, j)].append((cost, h(a, j + T[b]))) solver = Dijkstra(N * (L + 1), E) ans = solver.inf for j in range(L + 1): ans = min(ans, solver.get_cost((N - 1) * (L + 1) + j)) print(ans)