「一本通 6.1 例 1」序列的第 k 个数

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	C20250069	18ms	376 KiB	C++17(O2)	619 Bytes	2023-6-2 17:02:10
AC	C20250070	19ms	476 KiB	C++17(O2)	444 Bytes	2023-5-29 20:30:55
AC	BC20260012	19ms	504 KiB	C++17(O2)	637 Bytes	2023-9-26 16:53:37
AC	C20250058	20ms	504 KiB	C++17(O2)	411 Bytes	2023-6-1 17:04:22
AC	C20250465	21ms	504 KiB	C++17(O2)	465 Bytes	2023-6-19 14:54:42
AC	BC20260092	21ms	504 KiB	C++17(O2)	509 Bytes	2023-11-21 16:49:22