求 1+2+3+...+N 的值

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	何庭杨xly2025	30ms	812 KiB	C++14(O2)	168 Bytes	2025-8-9 10:20:45
AC	Mr_Wr	32ms	820 KiB	C++14(O2)	195 Bytes	2025-8-9 8:48:35
AC	李穆萨	32ms	804 KiB	C++14	174 Bytes	2025-8-9 8:46:31
AC	许默xly2025	32ms	808 KiB	C++14(O2)	184 Bytes	2025-8-9 8:49:14
AC	hey_muzili	32ms	808 KiB	C++14(O2)	184 Bytes	2025-8-9 8:47:57
AC	Lyd1107	33ms	808 KiB	C++14	275 Bytes	2025-8-8 10:22:42
AC	胡宇翔xly2025	33ms	732 KiB	C++14(O2)	163 Bytes	2025-8-8 15:21:50
AC	何雨壕	33ms	808 KiB	C++14(O2)	213 Bytes	2025-8-9 8:45:20
AC	姚胜蓝	34ms	816 KiB	C++17(O2)	225 Bytes	2025-8-8 10:16:30
AC	_chjich_	35ms	808 KiB	C++14(O2)	174 Bytes	2025-7-15 16:55:57
AC	heqianyu	35ms	808 KiB	C++14	216 Bytes	2025-8-8 11:17:56
AC	Zzzzsd	35ms	816 KiB	C++14	201 Bytes	2025-8-8 18:40:14
AC	陈国瑞	35ms	808 KiB	C++14(O2)	156 Bytes	2025-7-15 18:29:36
AC	王昱尊xly2025	35ms	808 KiB	C++14(O2)	176 Bytes	2025-8-8 15:25:40
AC	pcx...	36ms	808 KiB	C++17(O2)	195 Bytes	2025-8-8 11:01:41
AC	xzh13579	36ms	808 KiB	C++14(O2)	250 Bytes	2025-8-10 17:30:45
AC	Mch121018	36ms	796 KiB	C++14	178 Bytes	2025-8-8 13:55:19
AC	chenqiugu	37ms	764 KiB	C++14	168 Bytes	2025-8-8 10:16:08
AC	tianlangyufirst	37ms	808 KiB	C++17(O2)	307 Bytes	2025-8-8 17:08:25
AC	hmtzl666	37ms	808 KiB	C++14(O2)	169 Bytes	2025-8-8 18:46:48
AC	钟雨辰xly2025	37ms	732 KiB	C++14(O2)	172 Bytes	2025-8-8 13:13:40
AC	_anguanie_	37ms	760 KiB	C++14(O2)	181 Bytes	2025-8-8 13:08:53
AC	冯俊诚	37ms	808 KiB	C++14(O2)	187 Bytes	2025-8-8 11:44:07
AC	Liu	38ms	896 KiB	C++14	214 Bytes	2025-8-8 11:43:43
AC	李衍树xly2025	38ms	740 KiB	C++14(O2)	166 Bytes	2025-8-8 16:17:43
AC	杨家齐xly2025	38ms	804 KiB	C++14(O2)	151 Bytes	2025-8-8 15:14:52
AC	taoruiguo120	39ms	808 KiB	C++14	217 Bytes	2025-8-8 10:19:27
AC	jinxijun	39ms	796 KiB	C++14	171 Bytes	2025-8-8 11:39:37
AC	w20120404	39ms	792 KiB	C++14(O2)	180 Bytes	2025-8-8 11:42:16
AC	马康智xly2025	39ms	812 KiB	C++14(O2)	169 Bytes	2025-8-8 15:44:03
AC	陈珑予xly2025	39ms	808 KiB	C++14(O2)	175 Bytes	2025-8-8 11:50:49
AC	王思懿	39ms	808 KiB	C++14(O2)	179 Bytes	2025-8-8 11:40:05
AC	王冠楠xly2025	40ms	808 KiB	C++14(O2)	193 Bytes	2025-8-8 15:37:06