随笔分类 -  PAT

摘要：1003. Emergency (25)时间限制400 ms内存限制32000 kB代码长度限制16000 B判题程序Standard作者CHEN, YueAs an emergency rescue team leader of a city, you are given a special map of your country. The map shows several scattered cities connected by some roads. Amount of rescue teams in each city and the length of each road bet 阅读全文

摘要：1021. Deepest Root (25)时间限制1500 ms内存限制32000 kB代码长度限制16000 B判题程序Standard作者CHEN, YueA graph which is connected and acyclic can be considered a tree. The height of the tree depends on the selected root. Now you are supposed to find the root that results in a highest tree. Such a root is calledthe deepe 阅读全文

摘要：1013. Battle Over Cities (25)时间限制400 ms内存限制32000 kB代码长度限制16000 B判题程序Standard作者CHEN, YueIt is vitally important to have all the cities connected by highways in a war. If a city is occupied by the enemy, all the highways from/toward that city are closed. We must know immediately if we need to repair a 阅读全文

摘要：1005. Spell It Right (20)时间限制400 ms内存限制32000 kB代码长度限制16000 B判题程序Standard作者CHEN, YueGiven a non-negative integer N, your task is to compute the sum of all the digits of N, and output every digit of the sum in English.Input Specification:Each input file contains one test case. Each case occupies one l 阅读全文

摘要：1001. A+B Format (20)时间限制400 ms内存限制32000 kB代码长度限制16000 B判题程序Standard作者CHEN, YueCalculate a + b and output the sum in standard format -- that is, the digits must be separated into groups of three by commas (unless there are less than four digits).InputEach input file contains one test case. Each case 阅读全文

摘要：1002. A+B for Polynomials (25)时间限制400 ms内存限制32000 kB代码长度限制16000 B判题程序Standard作者CHEN, YueThis time, you are supposed to find A+B where A and B are two polynomials.InputEach input file contains one test case. Each case occupies 2 lines, and each line contains the information of a polynomial: K N1 aN1N 阅读全文

摘要：1008. Elevator (20)时间限制400 ms内存限制32000 kB代码长度限制16000 B判题程序Standard作者CHEN, YueThe highest building in our city has only one elevator. A request list is made up with N positive numbers. The numbers denote at which floors the elevator will stop, in specified order. It costs 6 seconds to move the elevat 阅读全文

摘要：1011. World Cup Betting (20)时间限制400 ms内存限制32000 kB代码长度限制16000 B判题程序Standard作者CHEN, YueWith the 2010 FIFA World Cup running, football fans the world over were becoming increasingly excited as the best players from the best teams doing battles for the World Cup trophy in South Africa. Similarly, footb 阅读全文

摘要：1006. Sign In and Sign Out (25)时间限制400 ms内存限制32000 kB代码长度限制16000 B判题程序Standard作者CHEN, YueAt the beginning of every day, the first person who signs in the computer room will unlock the door, and the last one who signs out will lock the door. Given the records of signing in's and out's, you ar 阅读全文

摘要：1020. Tree Traversals (25)时间限制400 ms内存限制32000 kB代码长度限制16000 B判题程序Standard作者CHEN, YueSuppose that all the keys in a binary tree are distinct positive integers. Given the postorder and inorder traversal sequences, you are supposed to output the level order traversal sequence of the corresponding binar 阅读全文

摘要：1009. Product of Polynomials (25)时间限制400 ms内存限制32000 kB代码长度限制16000 B判题程序Standard作者CHEN, YueThis time, you are supposed to find A*B where A and B are two polynomials.Input Specification:Each input file contains one test case. Each case occupies 2 lines, and each line contains the information of a pol 阅读全文

摘要：1015. Reversible Primes (20)时间限制400 ms内存限制32000 kB代码长度限制16000 B判题程序Standard作者CHEN, YueAreversible primein any number system is a prime whose "reverse" in that number system is also a prime. For example in the decimal system 73 is a reversible prime because its reverse 37 is also a prime.No 阅读全文

摘要：1019. General Palindromic Number (20)时间限制400 ms内存限制32000 kB代码长度限制16000 B判题程序Standard作者CHEN, YueA number that will be the same when it is written forwards or backwards is known as a Palindromic Number. For example, 1234321 is a palindromic number. All single digit numbers are palindromic numbers.Alth 阅读全文

摘要：1007. Maximum Subsequence Sum (25)时间限制400 ms内存限制32000 kB代码长度限制16000 B判题程序Standard作者CHEN, YueGiven a sequence of K integers { N1, N2, ..., NK}. A continuous subsequence is defined to be { Ni, Ni+1, ..., Nj} where 1 <= i <= j <= K. TheMaximum Subsequenceis the continuous subsequence which has 阅读全文

摘要：1004. Counting Leaves (30)时间限制400 ms内存限制32000 kB代码长度限制16000 B判题程序Standard作者CHEN, YueA family hierarchy is usually presented by a pedigree tree. Your job is to count those family members who have no child.InputEach input file contains one test case. Each case starts with a line containing 0 < N &l 阅读全文

摘要：1022. Digital Library (30)时间限制1000 ms内存限制32000 kB代码长度限制16000 B判题程序Standard作者CHEN, YueA Digital Library contains millions of books, stored according to their titles, authors, key words of their abstracts, publishers, and published years. Each book is assigned an unique 7-digit number as its ID. Given 阅读全文

摘要：1012. The Best Rank (25)时间限制400 ms内存限制32000 kB代码长度限制16000 B判题程序Standard作者CHEN, YueTo evaluate the performance of our first year CS majored students, we consider their grades of three courses only: C - C Programming Language, M - Mathematics (Calculus or Linear Algrbra), and E - English. At the mean 阅读全文