結果
| 問題 |
No.1576 織姫と彦星
|
| ユーザー |
lam6er
|
| 提出日時 | 2025-03-31 17:46:38 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
AC
|
| 実行時間 | 522 ms / 2,000 ms |
| コード長 | 1,220 bytes |
| コンパイル時間 | 142 ms |
| コンパイル使用メモリ | 82,636 KB |
| 実行使用メモリ | 76,776 KB |
| 最終ジャッジ日時 | 2025-03-31 17:47:46 |
| 合計ジャッジ時間 | 10,094 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 5 |
| other | AC * 54 |
ソースコード
from collections import deque
n = int(input())
start, end = map(int, input().split())
stones = list(map(int, input().split()))
# Create a list of all nodes including start, stones, and end
nodes = [start] + stones + [end]
total_nodes = len(nodes)
end_idx = total_nodes - 1 # Index of the end node
distance = [-1] * total_nodes
distance[0] = 0 # Start node is at index 0
q = deque([0])
found = False
while q:
current = q.popleft()
# Check if current node is the end node
if current == end_idx:
found = True
break
current_val = nodes[current]
for other_idx in range(total_nodes):
if other_idx == current:
continue
other_val = nodes[other_idx]
# Calculate Hamming distance
xor = current_val ^ other_val
ham = bin(xor).count('1')
if ham <= 1 and distance[other_idx] == -1:
distance[other_idx] = distance[current] + 1
q.append(other_idx)
if other_idx == end_idx:
found = True
# Early exit if end is found
q = deque()
break
if distance[end_idx] == -1:
print(-1)
else:
print(max(0, distance[end_idx] - 1))
lam6er