【例7.1】保留3位小数

状态	递交者	时间	内存	语言	代码	递交时间
AC	Estelle1125	3ms	256 KiB	C	118 Bytes	2025-11-11 21:03:41
AC	Yuzaiiio	4ms	256 KiB	C	118 Bytes	2025-11-11 21:16:50
AC	Lrrtingtong58	4ms	428 KiB	C	116 Bytes	2025-11-5 20:12:49
AC	jeff001	4ms	512 KiB	C	88 Bytes	2025-11-1 8:57:18
AC	haojieran29	8ms	504 KiB	C++11	87 Bytes	2025-11-1 20:52:32
AC	yuechu	8ms	508 KiB	C++11	157 Bytes	2025-11-1 13:56:41
AC	lxxtp2	8ms	508 KiB	C++11	111 Bytes	2025-11-8 20:22:47
AC	wbs070611	9ms	504 KiB	C++11	116 Bytes	2025-11-1 22:33:13
AC	M9426926	9ms	504 KiB	C++11	107 Bytes	2025-11-2 12:54:37
AC	qwer1234	9ms	504 KiB	C++11	114 Bytes	2025-10-31 14:32:50
AC	Ackfy070330	113ms	3.8 MiB	Python 3	44 Bytes	2025-11-2 21:59:31