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	2026-2-9 16:30:45
AC	chentong	-	-	111 Bytes	2025-12-13 16:31:44
AC	zhanghongyi	-	-	111 Bytes	2025-9-14 16:02:33
AC	xiongzimo	-	-	111 Bytes	2025-12-13 17:17:55
AC	zhangchenrui	-	-	111 Bytes	2026-2-5 11:36:28
AC	boluo	-	-	111 Bytes	2026-2-2 15:13:55
AC	weizhichen	-	-	111 Bytes	2025-9-26 18:40:56
AC	chenchiyu	-	-	111 Bytes	2026-2-2 15:10:42
AC	chenxiaojun	-	-	111 Bytes	2026-2-8 15:02:45
AC	liuhaoyu	-	-	111 Bytes	2025-9-14 22:24:00