ORAC — Tag

Time Limit	Memory Limit	Input File	Output File
1 second	256 MiB	`tagin.txt`	`tagout.txt`

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Problem info

- Subtask 1 (20 points) has 7 cases.
- Subtask 2 (20 points) has 7 cases.
- Subtask 3 (30 points) has 11 cases.
- Subtask 4 (30 points) has 20 cases.