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 16:15:41
AC	chentong	-	-	111 Bytes	2026-2-4 11:39:15
AC	xiongzimo	-	-	111 Bytes	2025-12-20 17:14:03
AC	yangbaoqiao	-	-	111 Bytes	2025-12-20 17:59:11
AC	zhangchenrui	-	-	111 Bytes	2026-2-5 12:08:11
AC	boluo	-	-	111 Bytes	2026-2-2 16:03:50
AC	weizhichen	-	-	111 Bytes	2025-9-26 18:27:49
AC	zhouzixuan	-	-	111 Bytes	2026-2-2 16:03:28
AC	fangliangxin	-	-	111 Bytes	2026-2-2 16:03:51
AC	chenchiyu	-	-	111 Bytes	2026-2-2 16:03:21
AC	chenxiaojun	-	-	111 Bytes	2026-2-10 14:59:10
AC	liuhaoyu	-	-	111 Bytes	2025-9-14 22:10:00