結果
問題 |
No.240 ナイト散歩
|
ユーザー |
![]() |
提出日時 | 2020-05-28 01:01:16 |
言語 | Python3 (3.13.1 + numpy 2.2.1 + scipy 1.14.1) |
結果 |
AC
|
実行時間 | 35 ms / 2,000 ms |
コード長 | 1,903 bytes |
コンパイル時間 | 117 ms |
コンパイル使用メモリ | 13,056 KB |
実行使用メモリ | 11,136 KB |
最終ジャッジ日時 | 2024-10-13 03:58:17 |
合計ジャッジ時間 | 2,290 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 * 4 |
other | AC * 30 |
ソースコード
import sys def input(): return sys.stdin.readline().strip() def list2d(a, b, c): return [[c] * b for i in range(a)] def list3d(a, b, c, d): return [[[d] * c for j in range(b)] for i in range(a)] def list4d(a, b, c, d, e): return [[[[e] * d for j in range(c)] for j in range(b)] for i in range(a)] def ceil(x, y=1): return int(-(-x // y)) def INT(): return int(input()) def MAP(): return map(int, input().split()) def LIST(N=None): return list(MAP()) if N is None else [INT() for i in range(N)] def Yes(): print('Yes') def No(): print('No') def YES(): print('YES') def NO(): print('NO') sys.setrecursionlimit(10 ** 9) INF = 10 ** 19 MOD = 10 ** 9 + 7 EPS = 10 ** -10 def bfs(src): from collections import deque que = deque([src]) dist = {} dist[src] = 0 while que: x, y = que.popleft() if dist[(x, y)] >= 3: continue if (x-2, y-1) not in dist: dist[(x-2, y-1)] = dist[(x, y)] + 1 que.append((x-2, y-1)) if (x-2, y+1) not in dist: dist[(x-2, y+1)] = dist[(x, y)] + 1 que.append((x-2, y+1)) if (x-1, y-2) not in dist: dist[(x-1, y-2)] = dist[(x, y)] + 1 que.append((x-1, y-2)) if (x-1, y+2) not in dist: dist[(x-1, y+2)] = dist[(x, y)] + 1 que.append((x-1, y+2)) if (x+1, y-2) not in dist: dist[(x+1, y-2)] = dist[(x, y)] + 1 que.append((x+1, y-2)) if (x+1, y+2) not in dist: dist[(x+1, y+2)] = dist[(x, y)] + 1 que.append((x+1, y+2)) if (x+2, y-1) not in dist: dist[(x+2, y-1)] = dist[(x, y)] + 1 que.append((x+2, y-1)) if (x+2, y+1) not in dist: dist[(x+2, y+1)] = dist[(x, y)] + 1 que.append((x+2, y+1)) return dist x, y = MAP() res = bfs((0, 0)) if (x, y) in res: YES() else: NO()