用for语句打印二行星号（每行20个）

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	Chaser Of Light	2ms	324 KiB	C++98	147 Bytes	2024-5-11 22:19:18
AC	丁郑涵	2ms	548 KiB	C++17	135 Bytes	2024-7-9 16:01:51
AC	江宜轩	2ms	324 KiB	C++98	148 Bytes	2024-8-1 18:32:14
AC	林文权	2ms	324 KiB	C++98	206 Bytes	2024-8-13 11:23:54
AC	牛奶	2ms	532 KiB	C++98	151 Bytes	2024-5-30 21:29:30
AC	肖君陶	3ms	524 KiB	C++98	205 Bytes	2024-12-16 19:57:52
AC	徐严羿泽	3ms	784 KiB	C++98	198 Bytes	2025-1-22 17:24:30