ORAC — Detective

Time Limit	Memory Limit	Input File	Output File
1 second	256 MiB	`detectivein.txt`	`detectiveout.txt`

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Problem info

- Subtask 1 (15 points) has 18 cases.
- Subtask 2 (25 points) has 42 cases.
- Subtask 3 (20 points) has 39 cases.
- Subtask 4 (40 points) has 65 cases.