求小数的某一位

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	w20120404	31ms	808 KiB	C++14(O2)	176 Bytes	2025-8-20 17:11:15
AC	_chjich_	33ms	808 KiB	C++14(O2)	257 Bytes	2025-7-11 9:53:55
AC	xzh13579	33ms	808 KiB	C++14(O2)	181 Bytes	2025-8-6 15:53:22
AC	Harry	36ms	688 KiB	C++14	200 Bytes	2025-8-21 16:09:49
AC	钟执墨2026dly	37ms	880 KiB	C++14(O2)	169 Bytes	2026-3-14 8:46:25
AC	陈国瑞	38ms	812 KiB	C++14(O2)	187 Bytes	2025-7-15 17:32:09
AC	Mch121018	40ms	852 KiB	C++17(O2)	170 Bytes	2026-1-15 16:40:56
AC	郑枨瑞	40ms	808 KiB	C++14(O2)	220 Bytes	2026-3-1 16:11:36