7-3 Summit (25分)   A summit (峰会) is a meeting of heads of state or government. Arranging the rest areas for the summit is not a simple job. The ideal arrangement of one area is to invite those heads so that everyone is a direct friend of everyone. No…

7-2 Block Reversing (25分)   Given a singly linked list L. Let us consider every K nodes as a block (if there are less than K nodes at the end of the list, the rest of the nodes are still considered as a block). Your job is to reverse all the blocks i…

7-4 Cartesian Tree (30分)   A Cartesian tree is a binary tree constructed from a sequence of distinct numbers. The tree is heap-ordered, and an inorder traversal returns the original sequence. For example, given the sequence { 8, 15, 3, 4, 1, 5, 12, 1…

PAT (Advanced Level) Practice 1002 A+B for Polynomials (25 分) 凌宸1642 题目描述: This time, you are supposed to find A+B where A and B are two polynomials. 译:这一次,你要找到 A + B ,其中 A , B 是两个多项式 Input Specification (输入说明): Each input file contains one test case…

PAT (Basic Level) Practice (中文)1055 集体照 (25 分) 凌宸1642 题目描述: 拍集体照时队形很重要,这里对给定的 N 个人 K 排的队形设计排队规则如下: 每排人数为 N/K(向下取整),多出来的人全部站在最后一排: 后排所有人的个子都不比前排任何人矮: 每排中最高者站中间(中间位置为 m/2+1,其中 m 为该排人数,除法向下取整): 每排其他人以中间人为轴,按身高非增序,先右后左交替入队站在中间人的两侧(例如5人身高为190.188.186.175.…

7-1 Good in C (20分)   When your interviewer asks you to write "Hello World" using C, can you do as the following figure shows? Input Specification: Each input file contains one test case. For each case, the first part gives the 26 capital Englis…

题意: 输入两个正整数N和M(存疑M是否为整数,N<=1000,M<=500)表示月饼的种数和市场对于月饼的最大需求,接着输入N个正整数表示某种月饼的库存,再输入N个正数表示某种月饼库存全部出手的利润.输出最大利润. trick: 测试点2可能包含M不为整数的数据.(尽管题面说明M是正整数,可是根据从前PAT甲级题目的经验,有可能不是整数.....) AAAAAccepted code: #define HAVE_STRUCT_TIMESPEC #include<bits/stdc++.…

1020 Tree Traversals (25分)   Suppose 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 binary tre…

1146 Topological Order (25 分)   This is a problem given in the Graduate Entrance Exam in 2018: Which of the following is NOT a topological order obtained from the given directed graph? Now you are supposed to write a program to test each of the optio…

1071 Speech Patterns (25 分)   People often have a preference among synonyms of the same word. For example, some may prefer "the police", while others may prefer "the cops". Analyzing such patterns can help to narrow down a speaker's id…