练7.2 保留12位小数

状态	递交者	时间	内存	语言	代码	递交时间
AC	zhangpeng	26ms	764 KiB	C++11	122 Bytes	2025-3-2 20:05:20
AC	77510552	27ms	764 KiB	C++11	132 Bytes	2024-11-28 15:32:54
AC	gaoyutao2024	28ms	536 KiB	C++98	136 Bytes	2024-11-19 15:29:54
AC	wangshuye_20211328	28ms	772 KiB	C++11	117 Bytes	2024-12-26 16:28:20
AC	2021021	29ms	764 KiB	C++11(O2)	117 Bytes	2025-3-3 21:31:29
AC	诺诺	30ms	552 KiB	C++11(O2)	148 Bytes	2024-12-26 15:24:50
AC	lzy41	30ms	768 KiB	C++11(O2)	133 Bytes	2024-12-12 16:49:09
AC	lc24	30ms	764 KiB	C++11	116 Bytes	2024-10-31 16:17:16