随笔分类 - 【104】PAT
摘要：A long-distance telephone company charges its customers by the following rules: 一个长途电话公司费用告诉它的顾客需要遵循以下的规则 Making a long-distance call costs a certain
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摘要：A reversible prime in any number system is a prime whose "reverse" in that number system is also a prime. 一个反素数是任意数字系统中，不仅本身是素数反的也是素数 For example in t
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摘要：Suppose a bank has N windows open for service. 一个银行有N个服务的窗口 There is a yellow line in front of the windows which devides the waiting area into two par
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摘要：It is vitally important to have all the cities connected by highways in a war. 在一个战争中用高速公路把所有的城市连接起来是十分重要的。 If a city is occupied by the enemy, all th
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摘要：To evaluate the performance of our first year CS majored students, 为了计算第一年计算机科学学生的表现 we consider their grades of three courses only: 我们从三个方面考虑我们的成绩 C
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摘要：With the 2010 FIFA World Cup running, 随着2010世界杯的举行 football fans the world over were becoming increasingly excited as the best players from the best t
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摘要：Given a pair of positive integers, for example, 6 and 110, 给出一对正整数，例如6和110 can this equation 6 = 110 be true? 6=110这个等式能是对的吗 The answer is "yes", if 6
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摘要：多项式乘法 和多项式加法类似，参考之前多项式加法的代码改改就出来了。 主要是注意一下。最大次数应该会有1000000，然后按照乘法规则来，分配率就没有问题
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摘要：Given a sequence of K integers { N1, N2, ..., NK }. 给出一个连续的K个整数 A continuous subsequence is defined to be { Ni, Ni+1, ..., Nj } where 1 <= i <= j <= K
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摘要：At the beginning of every day, the first person who signs in the computer room will unlock the door, 在每天的开始，第一个签到进入计算机房间的人将会解锁这门 and the last one who
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摘要：A family hierarchy is usually presented by a pedigree tree. 一个家族的层次结构经常用一个血缘树来呈现。 Your job is to count those family members who have no child. 你的工作是计算
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摘要：As an emergency rescue team leader of a city, you are given a special map of your country. 作为一个城市的紧急救援队的领导人，你需要给出一个对于你们国家特别的地图。 The map shows several
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摘要：This time, you are supposed to find A+B where A and B are two polynomials. 这一次，你被要求计算A+B当A和B是两个多项式的时候。 Input Each input file contains one test case. E
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摘要：时间限制 400 ms 内存限制 65536 kB 代码长度限制 16000 B Calculate a + b and output the sum in standard format 计算a+b并且输出标准形式的和 -- that is, the digits must be separate
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摘要：People in Mars represent the colors in their computers in a similar way as the Earth people. 火星人在他们的计算机上颜色的表示方式和地球人相似。 That is, a color is represented
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摘要：这次终于觉得智商不够用了，特么的。 总结给你的经验，对于这样字符串的题目，经常会出现一种叫做递归定义的东西。 还有一种叫做，相同的字母表示相同的字符串。 这道题目一共有三个条件。 1. 字符串中必须仅有P, A, T这三种字符，不可以包含其它字符； 2. 任意形如 xPATx 的字符串都可以获得“答
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摘要：有毒，真的有毒，难题对于简单题影响太大了，想的东西太多，总会在考虑，会不会时间超限，数据量有多大，三个循环就太慢了。。。。 总之我是真的不愿意看到这样的程序能过的，总觉得有更好的，却总是找不更好的额。。。。
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摘要：我脑洞大了。。。。。 以为是个找规律。。。。。 原来只是模拟。。。。。 我相信肯定是有规律的。。。。。 但是我就是不愿意了。。。。。
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摘要：Complete Binary Search Tree (30) 时间限制 100 ms 内存限制 65536 kB 代码长度限制 16000 B A Binary Search Tree (BST) is recursively defined as a binary tree which has
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