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	-	-	71 Bytes	2026-5-21 15:05:52
AC	wengzhaoyu8	-	-	71 Bytes	2026-5-11 13:18:58
AC	yuziqian	-	-	71 Bytes	2026-5-11 12:20:06
AC	zhengkaiyang666	-	-	71 Bytes	2026-5-12 12:20:42
AC	liusiyu	-	-	71 Bytes	2026-6-4 12:29:58
AC	liuhaoran	-	-	71 Bytes	2026-5-11 12:29:44
AC	cdh	-	-	71 Bytes	2026-6-2 13:54:50
AC	lzx_yyds_2015	-	-	71 Bytes	2026-6-4 12:38:45