結果
| 問題 |
No.2764 Warp Drive Spacecraft
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2024-06-10 10:27:31 |
| 言語 | Python3 (3.13.1 + numpy 2.2.1 + scipy 1.14.1) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 1,584 bytes |
| コンパイル時間 | 370 ms |
| コンパイル使用メモリ | 12,288 KB |
| 実行使用メモリ | 335,612 KB |
| 最終ジャッジ日時 | 2025-01-01 21:31:21 |
| 合計ジャッジ時間 | 99,555 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 WA * 1 |
| other | AC * 8 WA * 4 TLE * 23 |
ソースコード
import sys
import heapq
def read_input():
input = sys.stdin.read
data = input().split()
index = 0
N = int(data[index])
M = int(data[index + 1])
index += 2
W = list(map(int, data[index: index + N]))
index += N
edges = []
for _ in range(M):
U = int(data[index]) - 1
V = int(data[index + 1]) - 1
T = int(data[index + 2])
edges.append((U, V, T))
index += 3
return N, M, W, edges
def build_graph(N, edges):
graph = [[] for _ in range(N)]
for U, V, T in edges:
graph[U].append((V, T))
graph[V].append((U, T))
return graph
def dijkstra(N, graph, W):
dist = [float("inf")] * N
dist[0] = 0
pq = [(0, 0)] # (distance, node)
while pq:
current_dist, u = heapq.heappop(pq)
if current_dist > dist[u]:
continue
# 航路に沿った移動
for v, time in graph[u]:
new_dist = current_dist + time
if new_dist < dist[v]:
dist[v] = new_dist
heapq.heappush(pq, (new_dist, v))
# ワープ移動
for v in range(N):
if v != u:
warp_time = W[u] * W[v]
new_dist = current_dist + warp_time
if new_dist < dist[v]:
dist[v] = new_dist
heapq.heappush(pq, (new_dist, v))
return dist[N - 1]
if __name__ == "__main__":
N, M, W, edges = read_input()
graph = build_graph(N, edges)
shortest_time = dijkstra(N, graph, W)
print(shortest_time)