【例2.2】你好世界
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说明
输出中文短句"你好，世界。"
输入格式
无
输出格式
你好，世界。
样例
无你好，世界。
6.11.18:30
- Status
- Done
- Rule
- OI
- Problem
- 7
- Start at
- 2026-6-11 18:00
- End at
- 2026-6-21 18:00
- Duration
- 240 hour(s)
- Host
-
张老师
- Partic.
- 5