Blackout — ORAC

Time Limit	Memory Limit
1 second	256 MiB

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Problem info

- Subtask 1 (20 points) has 6 cases.
- Subtask 2 (20 points) has 7 cases.
- Subtask 3 (20 points) has 7 cases.
- Subtask 4 (20 points) has 6 cases.
- Subtask 5 (20 points) has 13 cases.
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