結果
| 問題 |
No.1323 うしらずSwap
|
| コンテスト | |
| ユーザー |
lam6er
|
| 提出日時 | 2025-04-16 00:26:20 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
MLE
|
| 実行時間 | - |
| コード長 | 2,126 bytes |
| コンパイル時間 | 428 ms |
| コンパイル使用メモリ | 81,592 KB |
| 実行使用メモリ | 533,444 KB |
| 最終ジャッジ日時 | 2025-04-16 00:27:49 |
| 合計ジャッジ時間 | 6,668 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 13 MLE * 1 -- * 45 |
ソースコード
import sys
from collections import deque
def main():
H, W, r_a, c_a, r_b, c_b = map(int, sys.stdin.readline().split())
grid = []
for _ in range(H):
grid.append(sys.stdin.readline().strip())
# Convert to 0-based indices
u_start = (r_a - 1, c_a - 1)
h_start = (r_b - 1, c_b - 1)
target_u = h_start
target_h = u_start
# Check if already at target
if u_start == target_u and h_start == target_h:
print(0)
return
# Directions: up, down, left, right
dirs = [(-1, 0), (1, 0), (0, -1), (0, 1)]
# BFS queue: (u_pos, h_pos, steps)
queue = deque()
queue.append((u_start, h_start, 0))
visited = set()
visited.add((u_start[0], u_start[1], h_start[0], h_start[1]))
found = False
while queue:
u_pos, h_pos, steps = queue.popleft()
# Check if current state is target
if u_pos == target_u and h_pos == target_h:
print(steps)
found = True
break
# Generate moves for Ushi
for dr, dc in dirs:
new_r = u_pos[0] + dr
new_c = u_pos[1] + dc
if 0 <= new_r < H and 0 <= new_c < W:
if grid[new_r][new_c] == '.' and (new_r, new_c) != h_pos:
new_u = (new_r, new_c)
new_state = (new_r, new_c, h_pos[0], h_pos[1])
if new_state not in visited:
visited.add(new_state)
queue.append((new_u, h_pos, steps + 1))
# Generate moves for Hikari
for dr, dc in dirs:
new_r = h_pos[0] + dr
new_c = h_pos[1] + dc
if 0 <= new_r < H and 0 <= new_c < W:
if grid[new_r][new_c] == '.' and (new_r, new_c) != u_pos:
new_h = (new_r, new_c)
new_state = (u_pos[0], u_pos[1], new_r, new_c)
if new_state not in visited:
visited.add(new_state)
queue.append((u_pos, new_h, steps + 1))
if not found:
print(-1)
if __name__ == "__main__":
main()
lam6er