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点数与线段条数的规律

2026-11-14 12:18

n（n-1）/2。点数n*（n-1）/2就等于线段数，m=n（n-1）/2，m是线段条数，n是点的个数。线段上无点，1条线段，线段上一点，3条线段(1+2)，线段上两点，6条线段(1+2+3)，线段上

玩具小熊的外貌描写

2026-10-23 20:29

应急局是干嘛的

2026-10-19 11:30

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CONNECT:[ UseTime:0.000315s ] mysql:host=127.0.0.1;port=3306;dbname=soker_pro;charset=utf8mb4
SHOW FULL COLUMNS FROM `soker_each_city_web` [ RunTime:0.000838s ]
SELECT `id`,`city_id`,`city_name`,`city_directory` FROM `soker_each_city_web` WHERE `old_city_directory` = 'tc' LIMIT 1 [ RunTime:0.000325s ]
SHOW FULL COLUMNS FROM `soker_city` [ RunTime:0.000934s ]
SELECT `id`,`city_name`,`city_pid`,`city_directory` FROM `soker_city` WHERE `city_directory` = 'tc' AND `isTrue` = 1 AND `isShow` = 1 AND `isDelete` = 0 LIMIT 1 [ RunTime:0.000256s ]
SHOW FULL COLUMNS FROM `soker_school_campus` [ RunTime:0.000940s ]
SELECT b.`id`,b.`area_name` FROM `soker_school_campus` `a` LEFT JOIN `soker_city_area` `b` ON a.`campus_areaid`=b.`id` WHERE `a`.`campus_status` = '1' AND `a`.`campus_isdelete` = '0' AND `b`.`area_pid` = '269' AND `b`.`area_isDelete` = '0' GROUP BY `b`.`id` ORDER BY `b`.`orderid` ASC,`b`.`id` DESC [ RunTime:0.014897s ]
SHOW FULL COLUMNS FROM `soker_category` [ RunTime:0.000945s ]
SELECT `id`,`cat_name`,`cat_parentid`,`cat_secondid` FROM `soker_category` WHERE `cat_directory` = 'catcourse' AND `isTrue` = 1 AND `isDelete` = 0 LIMIT 1 [ RunTime:0.000239s ]
SHOW FULL COLUMNS FROM `soker_school_campus_course` [ RunTime:0.001050s ]
SELECT COUNT(*) AS think_count FROM ( SELECT count(*) AS think_count FROM `soker_school_campus_course` `a` LEFT JOIN `soker_school_materials` `b` ON a.`course_id`=b.`id` LEFT JOIN `soker_school_campus` `c` ON a.`campus_id`=c.`id` LEFT JOIN `soker_school` `d` ON a.`school_id`=d.`id` WHERE ( `a`.`course_status` = '1' AND `b`.`material_isdelete` = '0' AND `a`.`provinid` = '27' AND `a`.`cityid` = '269' AND `c`.`campus_status` = '1' AND `c`.`campus_isdelete` = '0' AND `d`.`isDelete` = '0' ) GROUP BY `b`.`id` ) `_group_count_` LIMIT 1 [ RunTime:0.000434s ]
SELECT `id`,`city_name`,`city_directory` FROM `soker_city` WHERE `city_directory` = 'tc' LIMIT 1 [ RunTime:0.000302s ]
SELECT `id`,`cat_name`,`cat_directory` FROM `soker_category` WHERE `cat_directory` = 'catcourse' LIMIT 1 [ RunTime:0.000183s ]
SHOW FULL COLUMNS FROM `soker_each_city_cms` [ RunTime:0.000798s ]
SELECT `id`,`cms_id`,`cms_name`,`cms_code`,`cms_pid`,`typeid`,`data_id`,`data_name` FROM `soker_each_city_cms` WHERE `data_id` = 269 AND `typeid` = 2 LIMIT 1 [ RunTime:0.000621s ]
SHOW FULL COLUMNS FROM `soker_school_course_score` [ RunTime:0.000779s ]
SELECT COUNT(*) AS think_count FROM ( SELECT count(*) AS think_count FROM `soker_school_course_score` `a` LEFT JOIN `soker_school_campus` `b` ON a.`campus_id`=b.`id` LEFT JOIN `soker_school_materials` `c` ON a.`comment_id`=c.`id` WHERE ( `b`.`campus_cityid` = '269' AND `b`.`campus_isdelete` = '0' AND `b`.`campus_status` = '1' AND `c`.`material_isdelete` = '0' ) GROUP BY `c`.`id` ) `_group_count_` LIMIT 1 [ RunTime:0.010688s ]
SELECT `id`,`cat_name`,`cat_parentid`,`cat_secondid` FROM `soker_category` WHERE `cat_directory` = 'catcourse' AND `isTrue` = 1 AND `isDelete` = 0 LIMIT 1 [ RunTime:0.000261s ]
SHOW FULL COLUMNS FROM `soker_system_content` [ RunTime:0.000892s ]
SELECT `id`,`con_title`,`con_images`,`con_introduction`,`con_createTime`,`con_orderTime` FROM `soker_system_content` WHERE ( `con_type` = 7 AND `con_isDelete` = 0 ) ORDER BY `con_orderTime` DESC,`con_orderid` ASC,`id` DESC LIMIT 3 [ RunTime:0.016817s ]
SELECT `invitation_box`,`invitation_box_wap`,`invitation_box_click`,`seo_title`,`seo_keywords`,`seo_description` FROM `soker_city` WHERE `id` = 269 LIMIT 1 [ RunTime:0.000254s ]

0.120889s