打印n行m列矩阵

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	xyls	3ms	9 MiB	C++98	223 Bytes	2025-1-19 22:09:54
AC	heliangyu	3ms	9 MiB	C++98	278 Bytes	2025-1-21 9:35:14
AC	liuhaoqi	3ms	9 MiB	C++98	217 Bytes	2025-1-21 9:46:41
AC	huangshengfeng	3ms	9.1 MiB	C++98	224 Bytes	2025-7-29 18:17:12
AC	luyanyi	3ms	9.1 MiB	C++98	173 Bytes	2025-10-25 14:31:46
AC	lichengjun	4ms	9.1 MiB	C++98	186 Bytes	2025-10-25 14:31:06
AC	baoyufu	4ms	9.1 MiB	C++98	217 Bytes	2025-7-29 18:00:31
AC	yuantushun	4ms	9.1 MiB	C++98	168 Bytes	2025-10-25 14:35:26
AC	luyixin	5ms	9.1 MiB	C++98	167 Bytes	2025-10-25 9:13:21
AC	jiangxingxing	7ms	9.1 MiB	C++98	175 Bytes	2025-10-25 9:12:31