判断题（每题 2 分，共 20 分）

状态	递交者	时间	内存	代码	递交时间
AC	chenaijin	-	-	80 Bytes	2026-5-19 12:42:30
AC	wengzhaoyu8	-	-	80 Bytes	2026-5-18 13:46:41
AC	yuziqian	-	-	80 Bytes	2026-5-21 15:31:15
AC	zhengkaiyang666	-	-	80 Bytes	2026-5-12 13:54:02
AC	liusiyu	-	-	80 Bytes	2026-6-4 13:13:36
AC	liuhaoran	-	-	80 Bytes	2026-5-11 13:15:37
AC	cdh	-	-	80 Bytes	2026-6-2 17:03:38