含k个3的数

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	Morning	25ms	6.4 MiB	C++14(O2)	283 Bytes	2023-12-1 17:41:29
AC	sinon	25ms	6.4 MiB	C++14(O2)	283 Bytes	2023-12-4 17:22:25
AC	高2027届16班法亦轩	25ms	6.5 MiB	C++14(O2)	317 Bytes	2024-12-7 15:39:45
AC	inclusing	25ms	6.4 MiB	C++14(O2)	280 Bytes	2023-12-1 17:31:56
AC	retun 0	26ms	6.4 MiB	C++14(O2)	321 Bytes	2023-11-29 17:30:48
AC	Eva	26ms	6.4 MiB	C++14(O2)	275 Bytes	2023-12-13 17:30:19
AC	王赟成	26ms	6.4 MiB	C++14(O2)	296 Bytes	2023-12-5 19:54:44
AC	StarryDeates	26ms	6.4 MiB	C++14(O2)	275 Bytes	2023-12-5 19:52:06
AC	xiaoduxiaodu	26ms	6.4 MiB	C++14(O2)	264 Bytes	2024-1-5 20:07:48
AC	刘畅	27ms	6.4 MiB	C++14(O2)	249 Bytes	2023-12-5 18:34:01
AC	ibaraki	28ms	6.4 MiB	C++14(O2)	275 Bytes	2023-11-30 21:01:42
AC	经开一中2026届11班关泽瑞	28ms	6.4 MiB	C++14(O2)	269 Bytes	2023-11-29 21:10:18
AC	szm	263ms	6.4 MiB	C++14(O2)	241 Bytes	2023-10-27 17:29:41