Artclass — ORAC

Time Limit	Memory Limit	Input File	Output File
1 second	256 MiB	`artin.txt`	`artout.txt`

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Problem info

- Subtask 1 (50 points) has 19 cases.
- Subtask 2 (10 points) has 3 cases.
- Subtask 3 (10 points) has 2 cases.
- Subtask 4 (10 points) has 2 cases.
- Subtask 5 (20 points) has 8 cases.