求1~n的和

状态	递交者	时间	内存	代码	递交时间
AC	灶门炭治郎：火之神神乐	7ms	384 KiB	182 Bytes	2023-3-18 17:36:14
AC	可爱的小花狗	7ms	384 KiB	182 Bytes	2023-3-18 17:39:46
AC	wanglvyan	7ms	432 KiB	172 Bytes	2023-3-18 17:42:31
AC	shihaocheng	8ms	440 KiB	161 Bytes	2023-3-18 17:30:28
AC	chengjunran	8ms	392 KiB	182 Bytes	2023-3-18 17:33:54
AC	Angel	8ms	432 KiB	164 Bytes	2023-3-18 17:50:17
AC	chengjunran	27ms	532 KiB	182 Bytes	2024-2-24 15:31:54
AC	majiachen	34ms	544 KiB	171 Bytes	2024-2-25 11:06:03
AC	张智洋	34ms	544 KiB	101 Bytes	2024-2-24 18:27:52
AC	吴周周	34ms	532 KiB	202 Bytes	2024-2-24 17:35:56
AC	wanglvyan	35ms	764 KiB	110 Bytes	2024-2-24 15:56:42
AC	Angel	35ms	536 KiB	214 Bytes	2024-2-24 18:30:34
AC	可爱的小花狗	35ms	548 KiB	115 Bytes	2024-2-24 18:17:19