有n个人围成一圈，顺序排号。从第一个人开始报数（从1到3报数），凡报到3的人退出
圈子，问最后留下的是原来第几号的那位。
-Have n individuals form a circle, in that order排号. From the first person to start off (from the reported number of 1-3), who reported 3 people out of the circle, the final question left is the original issue of who the first few.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001360s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.101923s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001328s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001972s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001325s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003727s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001190s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003308s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015704s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001413s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 237575 [ RunTime:0.001301s ]
