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字典树通过链表来建树，可以删除，可以通过前缀来查找字典序里的已存的单词。 当一个单词结束时，标记成不同的颜色。 创建结点 插入新单词 前缀查询 释放内存 查询一个单词是否已经存在 阅读全文
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It has been said that a watch that is stopped keeps better time than one that loses 1 second per day. The one that is stopped reads the correct time t 阅读全文
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https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=113&page=show_problem&problem=1282 Solve the equation:p∗e−x + q∗sin(x) 阅读全文
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A palindrome is a word, number, or phrase that reads the same forwards as backwards. For example, the name “anna” is a palindrome. Numbers can also be 阅读全文
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A. Watchmen time limit per test 3 seconds memory limit per test 256 megabytes input standard input output standard output A. Watchmen time limit per t 阅读全文