yangpancheng的博客

题目链接：点击打开链接文章转载自：xuanqis.comDescriptionDavy decided to start a weekend market stall where he sells his famous cakes. For the first market stall, Davy decided to bake n cakes. Each cake is des...

题目链接：点击打开链接文章转载自xuanqis.com描述贝壳找房力求为每位用户找到满意的房子，最近贝壳找房通过大数据得出下面的一个结论，求满足0<i,j<=n,f(i) * f(j)>0,且0 < gcd(f(i),f(j)) <= k的数对 (i,j)的数量，其中满足条件的对数就是可以满足某位用户的房源数目。其中 f(x)表示 x 所有数位的积，比如...