r802.
B. The Phase-Swapped Labyrinth
內容
This labyrinth exists in two overlapping phases.
Each cell may be open or blocked depending on the current phase.
You start in phase 0.
Some cells force an instant phase switch when entered.
Your goal is to reach the exit in the minimum number of steps.
輸入說明
A grid of characters describing walls, open paths, and phase-switch tiles.
- 1 ≤ n, m ≤ 200
輸出說明
Output the minimum number of steps needed to reach the exit, or -1.
範例輸入
#1
3 4 ..S. ##.# ..#.
範例輸出
#1
-1
測資資訊：
記憶體限制：
128
MB
提示 ：
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出處:
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