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Eva loves to collect coins from all over the universe, including some other planets like Mars. One day she visited a universal shopping mall which cou 阅读全文
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本篇文章作为个人的背包问题学习资料,来自转载 "dd大牛的《背包九讲》" . P01: 01背包问题 题目 有N件物品和一个容量为V的背包。第i件物品的费用是c[i],价值是w[i]。求解将哪些物品装入背包可使这些物品的费用总和不超过背包容量,且价值总和最大。 基本思路 这是最基础的背包问题,特点是 阅读全文
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Given any permutation of the numbers {0, 1, 2,..., N 1}, it is easy to sort them in increasing order. But what if Swap(0, ) is the ONLY operation that 阅读全文
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An AVL tree is a self balancing binary search tree. In an AVL tree, the heights of the two child subtrees of any node differ by at most one; if at any 阅读全文
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Given three integers A, B and C in [ 263, 263], you are supposed to tell whether A+B C. Input Specification: The first line of the input gives the pos 阅读全文