Buildings — ORAC

Time Limit	Memory Limit
1 second	1025 MiB

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Problem info

- Subtask 1 (25 points) has 68 cases.
- Subtask 2 (30 points) has 26 cases.
- Subtask 3 (30 points) has 76 cases.
- Subtask 4 (15 points) has 107 cases.