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已知自然数1,2,...,N(1≤N≤10000)依次入栈（即a#include#includeusing namespace std;#include stack str;int main(){ int a[100000]={0},i,j,n,t,p=0; ... 阅读全文
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Nikolay has decided to become the best programmer in the world! Now he regularly takes part in various programming contests, attentiv... 阅读全文
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One day, Mr. Frog is playing Link Game (Lian Lian Kan in Chinese). In this game, if you can draw at most three horizontal or vertical... 阅读全文
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As an Android developer, itˇs really not easy to figure out a newer version of two kernels, because Android is updated so frequently ... 阅读全文
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SVM（Support Vector Machine）is an important classification tool, which has a wide range of applications in cluster analysis, community... 阅读全文
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The war for Westeros is still in process, manpower and supplies are coming to an end and the winter is as near as never before. The g... 阅读全文
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You are encountered with a traditional problem concerning the sums of powers. Given two integers nn and kk. Let f(i)=ikf(i)=ik, pleas... 阅读全文
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Welcome to HDU to take part in the second CCPC girls’ competition! A new automatic judge system is used for this competition. During ... 阅读全文
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Do you know what is called ``Coprime Sequence''? That is a sequence consists of nnpositive integers, and the GCD (Greatest Common Divi... 阅读全文
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There is a mysterious organization called Time-Space Administrative Bureau (TSAB) in the deep universe that we humans have not discov... 阅读全文