Coloured Walkway — ORAC

Time Limit	Memory Limit
3.0 seconds	1024.0 MiB

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Problem info

- Subtask 1 (4 points) has 17 cases.
- Subtask 2 (22 points) has 46 cases.
- Subtask 3 (15 points) has 17 cases.
- Subtask 4 (26 points) has 21 cases.
- Subtask 5 (33 points) has 75 cases.