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题目描述 We have a knapsack of integral capacity and some objects of assorted integral sizes. We attempt to fill the knapsack up, but unfortunately, we ar 阅读全文
摘要:
题目描述 A group of people are standing in a line. Each person has a distinct height. You would like to count the number of unordered pairs of people in t 阅读全文
摘要:
题目描述 You are given n strings, each a permutation of the first k upper-case letters of the alphabet.String s is a subsequence of string t if and only i 阅读全文