結果
| 問題 |
No.1601 With Animals into Institute
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2024-12-29 17:37:25 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
AC
|
| 実行時間 | 1,272 ms / 3,000 ms |
| コード長 | 1,404 bytes |
| コンパイル時間 | 780 ms |
| コンパイル使用メモリ | 82,048 KB |
| 実行使用メモリ | 165,696 KB |
| 最終ジャッジ日時 | 2024-12-29 17:37:51 |
| 合計ジャッジ時間 | 20,859 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 36 |
ソースコード
## https://yukicoder.me/problems/no/1601
import heapq
MAX_VALUE = 10 ** 18
def main():
N, M = map(int, input().split())
edges = []
for _ in range(M):
a, b, c, x = map(int, input().split())
edges.append((a - 1, b - 1, c, x == 1))
# グラフ構築
next_nodes = [[] for _ in range(2 * N)]
for a, b, c, x in edges:
if x == 0:
next_nodes[a].append((b, c))
next_nodes[b].append((a, c))
next_nodes[a + N].append((b + N, c))
next_nodes[b + N].append((a + N, c))
else:
next_nodes[a + N].append((b, c))
next_nodes[b + N].append((a, c))
next_nodes[a + N].append((b + N, c))
next_nodes[b + N].append((a + N, c))
fix = [MAX_VALUE] * (2 * N)
seen = [MAX_VALUE] * (2 * N)
seen[2 * N - 1] = 0
queue = []
heapq.heappush(queue, (0, 2 * N - 1))
while len(queue) > 0:
cost ,v = heapq.heappop(queue)
if fix[v] < MAX_VALUE:
continue
fix[v] = cost
for w, c in next_nodes[v]:
if fix[w] < MAX_VALUE:
continue
new_cost = c + cost
if seen[w] > new_cost:
seen[w] = new_cost
heapq.heappush(queue, (new_cost, w))
for i in range(N - 1):
print(fix[i])
if __name__ == "__main__":
main()