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	2026-5-20 12:34:37
AC	wengzhaoyu8	-	-	71 Bytes	2026-5-11 13:26:32
AC	yuziqian	-	-	71 Bytes	2026-5-11 12:27:19
AC	zhengkaiyang666	-	-	71 Bytes	2026-5-12 12:22:30
AC	liusiyu	-	-	71 Bytes	2026-6-4 12:32:21
AC	liuhaoran	-	-	71 Bytes	2026-5-11 12:32:51
AC	cdh	-	-	71 Bytes	2026-6-2 13:53:42