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Problem DescriptionCalculate S(n).S(n)=13+23+33+......+n3.InputEach line will contain one integer N(1 // 运用数学公式：1^3 +2^3 +3^3 +……+n^3 =[n(n+1)/2]^2... 阅读全文
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Problem DescriptionThis problem is also a A + B problem,but it has a little difference,you should determine does (a+b) could be divided with 86.For ex... 阅读全文
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Problem Descriptionwe define f(A) = 1, f(a) = -1, f(B) = 2, f(b) = -2, ... f(Z) = 26, f(z) = -26;Give you a letter x and a number y , you should outpu... 阅读全文
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Problem DescriptionThere are many lamps in a line. All of them are off at first. A series of operations are carried out on these lamps. On the i-th op... 阅读全文