結果
| 問題 |
No.367 ナイトの転身
|
| コンテスト | |
| ユーザー |
zombietan
|
| 提出日時 | 2016-06-19 15:44:20 |
| 言語 | Python3 (3.13.1 + numpy 2.2.1 + scipy 1.14.1) |
| 結果 |
AC
|
| 実行時間 | 1,203 ms / 2,000 ms |
| コード長 | 1,873 bytes |
| コンパイル時間 | 83 ms |
| コンパイル使用メモリ | 13,056 KB |
| 実行使用メモリ | 17,536 KB |
| 最終ジャッジ日時 | 2024-10-11 05:21:34 |
| 合計ジャッジ時間 | 4,897 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 27 |
ソースコード
from collections import deque
H, W = map(int, input().split())
board = [list(input()) for _ in range(H)]
n_move = [(-2, -1),(-2, 1),(-1, -2),(-1, 2),(1, -2),(1, 2),(2, -1),(2, 1)]
b_move = [(-1, 1),(-1, -1),(1, 1),(1, -1)]
n_reached = [[0 for _ in range(W)] for __ in range(H)]
b_reached = [[0 for _ in range(W)] for __ in range(H)]
for x in range(W):
for y in range(H):
if board[y][x] == 'S':
start = (x, y)
class Piece:
def __init__(self, state, style, step):
self.state = state
self.style = style
self.step = step
def BFS(s):
q = deque()
q.append(Piece(s, 'knight', 0))
while q:
current = q.popleft()
x, y = current.state
form = current.style
count = current.step
if board[y][x] == 'G':
return count
if form == 'knight':
for j, k in n_move:
nx, ny = x + j, y + k
if 0 > nx or nx > W-1 or 0 > ny or ny > H-1:
continue
if n_reached[ny][nx] == 1:
continue
n_reached[ny][nx] = 1
if board[ny][nx] == 'R':
nform = 'bishop'
else:
nform = 'knight'
p = Piece((nx, ny), nform, count+1)
q.append(p)
else:
for n, m in b_move:
nx, ny = x + n, y + m
if 0 > nx or nx > W-1 or 0 > ny or ny > H-1:
continue
if b_reached[ny][nx] == 1:
continue
b_reached[ny][nx] = 1
if board[ny][nx] == 'R':
nform = 'knight'
else:
nform = 'bishop'
p = Piece((nx, ny), nform, count+1)
q.append(p)
return -1
print(BFS(start))
zombietan