ORAC — Snake Charmer

Time Limit	Memory Limit	Input File	Output File
1 second	256 MiB	`snakein.txt`	`snakeout.txt`

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- Subtask 1 (20 points) has 10 cases.
- Subtask 2 (10 points) has 6 cases.
- Subtask 3 (10 points) has 8 cases.
- Subtask 4 (15 points) has 13 cases.
- Subtask 5 (10 points) has 18 cases.
- Subtask 6 (35 points) has 47 cases.
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