結果
| 問題 |
No.2354 Poor Sight in Winter
|
| コンテスト | |
| ユーザー |
AngrySadEight
|
| 提出日時 | 2023-04-04 09:40:20 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
AC
|
| 実行時間 | 505 ms / 2,000 ms |
| コード長 | 1,462 bytes |
| コンパイル時間 | 365 ms |
| コンパイル使用メモリ | 82,028 KB |
| 実行使用メモリ | 101,576 KB |
| 最終ジャッジ日時 | 2024-09-25 11:04:58 |
| 合計ジャッジ時間 | 6,540 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 26 |
ソースコード
import heapq
def dijkstra(graph, v, dist, P):
hq = []
heapq.heappush(hq, [0, v])
dist[v] = 0
while len(hq) > 0:
min_d, cur = heapq.heappop(hq)
if dist[cur] != min_d:
continue
for next_cur, next_d in graph[cur]:
if dist[next_cur] > dist[cur] + (next_d + P - 1) // P - 1:
dist[next_cur] = dist[cur] + (next_d + P - 1) // P - 1
heapq.heappush(hq, [dist[next_cur], next_cur])
N, K = map(int, input().split())
sx, sy, gx, gy = map(int, input().split())
graph = [[] for _ in range(N + 2)]
X = []
Y = []
for i in range(N):
x, y = map(int, input().split())
X.append(x)
Y.append(y)
for i in range(N):
for j in range(N):
if i != j:
graph[i].append([j, abs(X[i] - X[j]) + abs(Y[i] - Y[j])])
for i in range(N):
graph[N].append([i, abs(X[i] - sx) + abs(Y[i] - sy)])
graph[i].append([N, abs(X[i] - sx) + abs(Y[i] - sy)])
for i in range(N):
graph[N + 1].append([i, abs(X[i] - gx) + abs(Y[i] - gy)])
graph[i].append([N + 1, abs(X[i] - gx) + abs(Y[i] - gy)])
graph[N].append([N + 1, abs(sx - gx) + abs(sy - gy)])
graph[N + 1].append([N, abs(sx - gx) + abs(sy - gy)])
INF = 10 ** 7
ng = 0
ok = 200002
while ok - ng > 1:
center = (ok + ng) // 2
dist = [INF for _ in range(N + 2)]
dijkstra(graph, N, dist, center)
if dist[N + 1] <= K:
ok = center
else:
ng = center
#print(ok, ng)
print(ok)
AngrySadEight