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Each year, fall in the North Central region is accompanied by the brilliant colors of the leaves on the trees, followed quickly by the falling leaves ... 阅读全文
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http://blog.csdn.net/yyxaf/article/details/7527878搜索关键词：散列函数、散列表、哈希函数、哈希表、Hash函数、Hash表散列方法不同于顺序查找、二分查找、二叉排序树及B-树上的查找。它不以关键字的比较为基本操作，采用直接寻址技术。在理想情况下，无须... 阅读全文
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StepsOne steps through integer points of the straight line. The length of a step must be nonnegative and can be by one bigger than, equal to, or by on... 阅读全文
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The ? 1 ? 2 ? ... ? n = k problemThe problemGiven the following formula, one can set operators '+' or '-' instead of each '?', in order to obtain a gi... 阅读全文
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Cube paintingWe have a machine for painting cubes. It is supplied with three different colors: blue, red and green. Each face of the cube gets one of ... 阅读全文
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Anti-prime SequencesTime Limit:3000MSMemory Limit:30000KTotal Submissions:2175Accepted:1022DescriptionGiven a sequence of consecutive integers n,n+1,n... 阅读全文
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Prime LandTime Limit:1000MSMemory Limit:10000KTotal Submissions:2122Accepted:979DescriptionEverybody in the Prime Land is using a prime base ... 阅读全文
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A:该题写了很久，一直TLE，主要是枚举到n/2时间复杂度实在太高了，其实嘛，这道题就是因式分解，所以就是i*i=n，也就是sqrt（n）#include#includeint main(){ int n,T,i; int a,b; scanf("%d",&T); while... 阅读全文
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DescriptionThe ministers of the cabinet were quite upset by the message from the Chief of Security stating that they would all have to change the four... 阅读全文
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题意：write a program to find out a nonzero multiple m of n whose decimal representation contains only the digits 0 and 1。写一个程序找出一个是n的倍数且只包含0，1的m看了别人的代码，... 阅读全文