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Problem DescriptionDo you like playing basketball ? If you are , you may know the NBA Skills Challenge . It is the content of the basketball skills . ... 阅读全文
posted @ 2015-08-05 18:46
Vmetrio
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主要是计算前n项和的公式。前n项和的立方公式为 ： s(n)=（n*(n+1)/2）^2;前n项和的平方公式为：s(n)=n*(n+1)(2*n+1)/6;转自百度搜索：公式证明 迭代法： 我们知道： 0次方和的求和公式ΣN^0=N 即1^0+2^0+...+n^0=n 1次方和的求和公式... 阅读全文
posted @ 2015-08-05 18:05
Vmetrio
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Problem DescriptionEverybody knows any number can be combined by the prime number.Now, your task is telling me what position of the largest prime fact... 阅读全文
posted @ 2015-08-05 17:33
Vmetrio
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Problem DescriptionAs we all know the Train Problem I, the boss of the Ignatius Train Station want to know if all the trains come in strict-increasing... 阅读全文
posted @ 2015-08-05 16:49
Vmetrio
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