結果
| 問題 |
No.1480 Many Complete Graphs
|
| コンテスト | |
| ユーザー |
gew1fw
|
| 提出日時 | 2025-06-12 12:53:20 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 1,357 bytes |
| コンパイル時間 | 190 ms |
| コンパイル使用メモリ | 82,284 KB |
| 実行使用メモリ | 105,748 KB |
| 最終ジャッジ日時 | 2025-06-12 12:54:55 |
| 合計ジャッジ時間 | 11,797 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 41 WA * 16 |
ソースコード
import sys
import heapq
def main():
input = sys.stdin.read().split()
ptr = 0
N = int(input[ptr])
ptr += 1
M = int(input[ptr])
ptr += 1
adj = [[] for _ in range(N + M + 1)] # Nodes are 1-based, virtual nodes are N+1 to N+M
for i in range(M):
k_i = int(input[ptr])
ptr += 1
c_i = int(input[ptr])
ptr += 1
s = list(map(int, input[ptr:ptr + k_i]))
ptr += k_i
virtual_node = N + 1 + i # Virtual nodes are N+1, N+2, ..., N+M
for x in s:
# Edge from x to virtual_node: cost is (x +1 + 2*c_i)
cost1 = (x + 1) + 2 * c_i
adj[x].append((virtual_node, cost1))
# Edge from virtual_node to x: cost is x
cost2 = x
adj[virtual_node].append((x, cost2))
# Dijkstra's algorithm
INF = float('inf')
dist = [INF] * (N + M + 1)
dist[1] = 0
heap = []
heapq.heappush(heap, (0, 1))
while heap:
current_dist, u = heapq.heappop(heap)
if current_dist > dist[u]:
continue
for (v, cost) in adj[u]:
if dist[v] > dist[u] + cost:
dist[v] = dist[u] + cost
heapq.heappush(heap, (dist[v], v))
if dist[N] == INF:
print(-1)
else:
print(dist[N] // 2)
if __name__ == '__main__':
main()
gew1fw