Speed Friending — ORAC

Time Limit	Memory Limit
1.2 seconds	1024 MiB

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Problem info

- Subtask 1 (20 points) has 14 cases.
- Subtask 2 (15 points) has 41 cases.
- Subtask 3 (35 points) has 46 cases.
- Subtask 4 (30 points) has 58 cases.