预习书本第108到111页,体会for循环的运行原理,试着完成这5道题目。 
题目很少,独立完成。 
        
| RunID | User | Nick Name | Problem ID | Result | Memory | Time | Language | Code Length | Submit Time | 
| 44981 | zhangwenyu | Accepted | 2080 KiB  | 0 ms  | C++ | 211 bytes | 2020-08-28 09:50:32 | ||
| 44883 | zhangwenyu | Accepted | 2080 KiB  | 1 ms  | C++ | 159 bytes | 2020-08-26 14:22:44 |