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The lowest common ancestor (LCA) of two nodes U and V in a tree is the deepest node that has both U and V as descendants. A binary search tree (BST) i 阅读全文
posted @ 2019-03-08 21:02
Pure_Java
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Werewolf（狼人杀） is a game in which the players are partitioned into two parties: the werewolves and the human beings. Suppose that in a game, player #1 阅读全文
posted @ 2019-03-08 21:02
Pure_Java
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Among all the factors of a positive integer N, there may exist several consecutive numbers. For example, 630 can be factored as 3×\times×5×\times×6×\t 阅读全文
posted @ 2019-03-08 21:00
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Eva would like to make a string of beads with her favorite colors so she went to a small shop to buy some beads. There were many colorful strings of b 阅读全文
posted @ 2019-03-08 20:58
Pure_Java
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For two rational numbers, your task is to implement the basic arithmetics, that is, to calculate their sum, difference, product and quotient. Input Sp 阅读全文
posted @ 2019-03-08 20:57
Pure_Java
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On a broken keyboard, some of the keys are worn out. So when you type some sentences, the characters corresponding to those keys will not appear on sc 阅读全文
posted @ 2019-03-08 20:54
Pure_Java
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Given N rational numbers in the form numerator/denominator, you are supposed to calculate their sum. Input Specification: Each input file contains one 阅读全文
posted @ 2019-03-08 20:42
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The Japanese language is notorious for its sentence ending particles. Personal preference of such particles can be considered as a reflection of the s 阅读全文
posted @ 2019-03-08 20:40
Pure_Java
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Scientific notation is the way that scientists easily handle very large numbers or very small numbers. The notation matches the regular expression [+- 阅读全文
posted @ 2019-03-08 20:39
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For any 4-digit integer except the ones with all the digits being the same, if we sort the digits in non-increasing order first, and then in non-decre 阅读全文
posted @ 2019-03-08 20:38
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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 th 阅读全文
posted @ 2019-03-08 20:37
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Sherlock Holmes received a note with some strange strings: Let's date! 3485djDkxh4hhGE 2984akDfkkkkggEdsb s&hgsfdk d&Hyscvnm. It took him only a minut 阅读全文
posted @ 2019-03-08 20:36
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Behind the scenes in the computer's memory, color is always talked about as a series of 24 bits of information for each pixel. In an image, the color 阅读全文
posted @ 2019-03-08 20:35
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If you are a fan of Harry Potter, you would know the world of magic has its own currency system -- as Hagrid explained it to Harry, "Seventeen silver 阅读全文
posted @ 2019-03-08 20:35
Pure_Java
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Given two strings S1 and S2, S=S1−S2 is defined to be the remaining string after taking all the characters in S2 from S1. Your task 阅读全文
posted @ 2019-03-08 20:34
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The task is really simple: given N exits on a highway which forms a simple cycle, you are supposed to tell the shortest distance between any pair of e 阅读全文
posted @ 2019-03-08 20:33
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Shuffling is a procedure used to randomize a deck of playing cards. Because standard shuffling techniques are seen as weak, and in order to avoid "ins 阅读全文
posted @ 2019-03-08 20:31
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Being unique is so important to people on Mars that even their lottery is designed in a unique way. The rule of winning is simple: one bets on a numbe 阅读全文
posted @ 2019-03-08 20:29
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Given any string of N (≥5) characters, you are asked to form the characters into the shape of U. For example, helloworld can be printed as: That is, t 阅读全文
posted @ 2019-03-08 20:28
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People in Mars represent the colors in their computers in a similar way as the Earth people. That is, a color is represented by a 6-digit number, wher 阅读全文
posted @ 2019-03-08 20:27
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Notice that the number 123456789 is a 9-digit number consisting exactly the numbers from 1 to 9, with no duplication. Double it we will obtain 2469135 阅读全文
posted @ 2019-03-08 20:26
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A Digital Library contains millions of books, stored according to their titles, authors, key words of their abstracts, publishers, and published years 阅读全文
posted @ 2019-03-08 20:24
Pure_Java
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Suppose that all the keys in a binary tree are distinct positive integers. Given the postorder and inorder traversal sequences, you are supposed to ou 阅读全文
posted @ 2019-03-08 20:23
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A 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 阅读全文
posted @ 2019-03-08 20:22
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A reversible prime in 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 re 阅读全文
posted @ 2019-03-08 20:21
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It 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 c 阅读全文
posted @ 2019-03-08 20:20
Pure_Java
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To evaluate the performance of our first year CS majored students, we consider their grades of three courses only: C - C Programming Language, M - Mat 阅读全文
posted @ 2019-03-08 20:18
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With the 2010 FIFA World Cup running, football fans the world over were becoming increasingly excited as the best players from the best teams doing ba 阅读全文
posted @ 2019-03-08 20:16
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Given a pair of positive integers, for example, 6 and 110, can this equation 6 = 110 be true? The answer is yes, if 6 is a decimal number and 110 is a 阅读全文
posted @ 2019-03-08 20:15
Pure_Java
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This time, you are supposed to find A×BA\times BA×B where AAA and BBB are two polynomials. Input Specification: Each input file contains one test case 阅读全文
posted @ 2019-03-08 20:13
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The 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 elev 阅读全文
posted @ 2019-03-08 20:12
Pure_Java
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1007 Maximum Subsequence Sum （25 分） Given a sequence of K integers { N1, N2, ..., NK }. A continuous subsequence is defined to be { Ni, N 阅读全文
posted @ 2019-03-08 20:07
Pure_Java
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At 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 阅读全文
posted @ 2019-03-08 20:06
Pure_Java
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Given 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 Specificat 阅读全文
posted @ 2019-03-08 20:04
Pure_Java
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A family hierarchy is usually presented by a pedigree tree. Your job is to count those family members who have no child. Input Specification: Each inp 阅读全文
posted @ 2019-03-08 20:03
Pure_Java
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As 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 ro 阅读全文
posted @ 2019-03-08 20:02
Pure_Java
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This time, you are supposed to find A+BA+BA+B where AAA and BBB are two polynomials. Input Specification: Each input file contains one test case. Each 阅读全文
posted @ 2019-03-08 20:00
Pure_Java
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1001 A+B Format （20 分） Calculate a+b and output the sum in standard format -- that is, the digits must be separated into groups of three by commas (un 阅读全文
posted @ 2019-03-08 19:57
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