同色三角形
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大样例 file
CSP模拟赛NKS（三）
- Status
- Done
- Rule
- IOI
- Problem
- 4
- Start at
- 2023-10-13 13:00
- End at
- 2023-10-13 17:30
- Duration
- 4.5 hour(s)
- Host
-
yuyongchao
- Partic.
- 6
