【例9.1】输出字符三角形

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	lfyst2422	13ms	504 KiB	C++14(O2)	182 Bytes	2025-4-18 17:54:40
AC	lfyst2414	14ms	768 KiB	C++14(O2)	170 Bytes	2025-3-22 14:40:59
AC	张知涵 (zdqz2533)	14ms	508 KiB	C++14(O2)	151 Bytes	2025-10-30 17:44:08
AC	lfy48	14ms	536 KiB	C++14(O2)	181 Bytes	2025-3-22 11:57:51
AC	oiiaio (lfyst2025035)	14ms	764 KiB	C++14(O2)	202 Bytes	2025-9-16 18:26:58