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DescriptionConsider all the sequences with length (0#include#includeusing namespace std;int dp[45][2];int main(){ int n,k; dp[1][0] = dp[1][1]= ... 阅读全文
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DescriptionThe student Vasechkin was terribly unlucky at his oral examination. Of 42 examination questions, he didn't prepare only the last one, and h... 阅读全文
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DescriptionBackgroundWe wandered in the labyrinth for twenty minutes before finally entering the large hall. The walls were covered by mirrors here as... 阅读全文