—个矩形由2012 x 2013个单位正方形组成，它的对角线经过多少个单位正方形的内部？

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31556' and id < 2528122 and id<>'2528122' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31556' and id > 2528122 and id<>'2528122' order by id asc limit 5