【入门】求数列的第n项的值是多少？

状态	递交者	时间	内存	语言	代码	递交时间
AC	zhangyi	1ms	532 KiB	C++14	111 Bytes	2026-4-30 13:33:37
AC	zhongjunnan	1ms	504 KiB	C++11(O2)	171 Bytes	2026-4-23 22:11:24
AC	shaojianle	1ms	512 KiB	C++98(O2)	136 Bytes	2026-4-24 13:49:06
AC	taosirui	1ms	516 KiB	C++98(O2)	181 Bytes	2026-4-23 16:33:20
AC	zhaozhiyi	1ms	504 KiB	C++17(O2)	124 Bytes	2026-5-29 13:21:42
AC	zhengkaiyang666	1ms	532 KiB	C++11(O2)	168 Bytes	2026-5-11 13:04:24
AC	yezihao	1ms	504 KiB	C++11(O2)	135 Bytes	2026-5-11 13:29:02
AC	cdh	1ms	340 KiB	C++98	107 Bytes	2026-5-21 16:02:15
AC	liusiyu	1ms	348 KiB	C++17(O2)	128 Bytes	2026-5-28 12:29:50
AC	lufenghao	1ms	504 KiB	C++11(O2)	131 Bytes	2026-5-11 13:30:35
AC	zhoumiya	1ms	508 KiB	C++17(O2)	86 Bytes	2026-4-24 13:06:37
AC	zhangxin	1ms	504 KiB	C++14(O2)	228 Bytes	2026-4-23 13:41:15
AC	liangluoquan	1ms	568 KiB	C++14(O2)	175 Bytes	2026-4-10 13:30:44
AC	yuziqian	3ms	508 KiB	C++98	86 Bytes	2026-4-7 17:11:59
AC	liuhaoran	4ms	536 KiB	C++14	134 Bytes	2026-4-6 11:17:46