单选题（每题 2 分，共 30 分）

状态	递交者	时间	内存	代码	递交时间
AC	zhaotongyu	-	-	111 Bytes	2026-2-6 15:43:47
AC	xiongzimo	-	-	111 Bytes	2025-12-21 22:50:20
AC	boluo	-	-	111 Bytes	2026-2-3 16:03:13
AC	weizhichen	-	-	111 Bytes	2025-9-26 18:14:51
AC	zhouzixuan	-	-	111 Bytes	2026-2-4 13:50:01
AC	fangliangxin	-	-	111 Bytes	2026-2-3 16:02:02
AC	chenchiyu	-	-	111 Bytes	2026-2-3 15:34:11
AC	chenxiaojun	-	-	111 Bytes	2026-2-9 15:31:39
AC	liweiwei	-	-	111 Bytes	2025-12-13 17:09:38
AC	liuhaoyu	-	-	111 Bytes	2025-9-12 23:46:33