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 | 
| 44868 | zhangyuyang | Accepted | 2080 KiB  | 1 ms  | C++ | 242 bytes | 2020-08-25 20:05:52 | ||
| 44605 | zhangyuyang | Accepted | 2080 KiB  | 0 ms  | C++ | 201 bytes | 2020-08-20 16:40:35 | ||
| 44591 | zhangyuyang | Wrong Answer | 2080 KiB  | 1 ms  | C++ | 125 bytes | 2020-08-20 13:38:48 |