保留12位小数

状态	递交者	时间	内存	语言	代码	递交时间
AC	31415926535	27ms	508 KiB	C++11	117 Bytes	2025-10-19 8:59:16
AC	juxiwen	27ms	760 KiB	C++11	127 Bytes	2025-10-19 8:51:13
AC	jiangyi	28ms	508 KiB	C++14	145 Bytes	2025-10-24 19:04:15
AC	ccyy105125	28ms	596 KiB	C++11	107 Bytes	2025-10-19 8:59:50
AC	wangziming	28ms	512 KiB	C++11	115 Bytes	2026-5-10 11:03:16
AC	wangbaoming	29ms	548 KiB	C++11	119 Bytes	2025-10-19 8:49:39