求各个科目成绩的平均分

状态	递交者	时间	内存	语言	代码	递交时间
AC	sunyining	33ms	504 KiB	C++14(O2)	326 Bytes	2024-7-18 9:46:18
AC	陈金浩	34ms	508 KiB	C++14(O2)	302 Bytes	2024-7-17 16:49:58
AC	徐浩淼	34ms	384 KiB	C++14(O2)	336 Bytes	2024-7-18 9:34:18
AC	wangjun	35ms	504 KiB	C++14(O2)	384 Bytes	2024-7-18 9:42:56
AC	dongyibo	37ms	384 KiB	C++14(O2)	405 Bytes	2023-7-14 10:41:31
AC	mc_player	37ms	504 KiB	C++14(O2)	284 Bytes	2023-7-14 10:35:59
AC	suiweihaoxuan	38ms	888 KiB	C++14(O2)	336 Bytes	2023-7-14 10:45:08
AC	xingjianpeng1	39ms	504 KiB	C++14(O2)	419 Bytes	2023-7-14 10:41:19
AC	maimairuby	41ms	504 KiB	C++14(O2)	419 Bytes	2023-7-14 10:37:41
AC	ZHANGKONGYANG	41ms	504 KiB	C++98(O2)	392 Bytes	2023-7-14 10:43:11