求小数的某一位

Status	Submit By	Time	Memory	Code	Submit At
AC	CC20260060	31ms	728 KiB	157 Bytes	2023-11-12 8:41:25
AC	summer23041	32ms	808 KiB	240 Bytes	2023-10-5 16:43:13
AC	C20250070	40ms	796 KiB	324 Bytes	2024-5-18 11:48:56
AC	BC20260030	40ms	808 KiB	189 Bytes	2024-4-15 6:47:56
AC	BC20260080	41ms	800 KiB	485 Bytes	2024-4-12 0:33:38
AC	BC20260085	42ms	804 KiB	178 Bytes	2024-5-20 13:53:41