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原题：https://pintia.cn/problem-sets/994805342720868352/problemsCalculate a+b and output the sum in standard format – that is, the digits must be separated into groups of three by commas (unless there a...

原题:https://pintia.cn/problem-sets/994805342720868352/problems/994805432256675840题目大意假设你有N个货币，面值从1到500不等，只允许使用其中的两枚货币，然后刚好达到付款要求，如果存在多组方案，输出其中一个货币最小的方案。如果没有符合要求的方案，输出No Solution。方法1（二分查找）先对输入的N个货币...

原题：https://pintia.cn/problem-sets/994805342720868352/problems/994805424153280512Sample Input:20 9 2410 2 4 3 5 10 2 18 9 7 2 2 1 3 12 1 8 6 2 200 4 01 02 03 0402 1 0504 2 06 0703 3 11 12 1306...

原题:https://pintia.cn/problem-sets/994805342720868352/problems/994805472333250560Sample Input:920:52:00 10 008:00:00 20 008:02:00 30 020:51:00 10 008:10:00 5 008:12:00 10 120:50:00 10 008:01...

原题：https://pintia.cn/problem-sets/994805342720868352/problems/994805430595731456题目大意一道有意思的数学题，给出一个数字n，给出所有小于等于这个数的数字中1的个数和。题目分析判断所有[1,n][1,n][1,n]的数字中1的个数，我们可以每位单独判断，计算每一位为1时有多少种情况，然后对所有情况进行求和。每一...

原题：https://pintia.cn/problem-sets/994805342720868352/problems/994805421066272768Sample Input:12 4Zoe_Bill 35 2333Bob_Volk 24 5888Anny_Cin 95 999999Williams 30 -22Cindy 76 76000Alice 18 88888...

原题：https://pintia.cn/problem-sets/994805342720868352/problems/994805419468242944题目大意np为老鼠的体重,ng为每组最多的老鼠数量，给出每个老鼠的体重，和初始顺序。然后每ng个老鼠为一组，挑选每组中体重最大的老鼠晋级下一轮，然后剩下的未晋级的老鼠给予相同评级，即若当前晋级group只老鼠，则剩下老鼠的评级统一为g...

原题：https://pintia.cn/problem-sets/994805342720868352/problems/994805417945710592Sample Input:17PopPeekMedianPush 3PeekMedianPush 2PeekMedianPush 1PeekMedianPopPopPush 5Push 4PeekMedian...

原题：https://pintia.cn/problem-sets/994805342720868352/problems/994805415005503488题目大意将一个大整数分解成多个质数的乘积，具体请搜索数论——正整数的唯一分解定理。解法1（素数筛选和匹配）筛选法的思路是建议一个大小为maxn的素数表，假定初始全是素数，然后逐个划掉，即1不是素数，花掉；2是素数，则所有2的倍速均...

原题：https://pintia.cn/problem-sets/994805342720868352/problems/994805413520719872题目大意给定计算机的有效数字N，和两个浮点数，将浮点数转成科学计数法表示，超出有效数字的部分直接截掉。题目分析用字符串或字符数组存储浮点数，先确定指数的大小：搜索小数点的位置dot，如果不存在小数点，则dot = 字符串的长度...

原题：https://pintia.cn/problem-sets/994805342720868352/problems/994805409175420928题目大意给出多个集合元素，求任意两个集合的相似度，即交并比：两个集合的交集元素个数/两个集合的并集元素个数。方法1（暴力模拟+最后一个测试点超时）由于C++中Set数据结构即为我们常见的集合，满足不重复，且会自动排序，底部存储为红...

原题：https://pintia.cn/problem-sets/994805342720868352/problems/994805437411475456题目大意给出M中喜欢的颜色（有先后顺序），然后给出一串长度为L的颜色条，去掉其中不喜欢的颜色，然后求剩下序列的一个子序列，使得这个子序列得颜色顺序符合自己喜欢颜色得先后顺序，不一定所有喜欢得颜色都有，但是要保证长度尽可能地长。方法1...

原题：https://pintia.cn/problem-sets/994805342720868352/problems/994805439202443264Sample Input 1:16 153 2 1 5 4 6 8 7 16 10 15 11 9 12 14 13Sample Output 1:1-54-67-811-11Sample Input 2:5 132...

原题：https://pintia.cn/problem-sets/994805342720868352/problems/994805526272000000This time, you are supposed to find A+B where A and B are two polynomials.Input Specification:Each input file contain...

原题：https://pintia.cn/problem-sets/994805342720868352/problems/994805521431773184A family hierarchy is usually presented by a pedigree tree. Your job is to count those family members who have no child...

原题：https://pintia.cn/problemsets/994805342720868352/problems/994805519074574336Given a non-negative integer N, your task is to compute the sum of all the digits of N, and output every digit of the su...

原题：https://pintia.cn/problemsets/994805342720868352/problems/994805519074574336Suppose that all the keys in a binary tree are distinct positive integers. Given the postorder and inorder traversal seq...

原题：https://pintia.cn/problem-sets/994805342720868352/problems/994805464397627392 A traveler’s map gives the distances between cities along the highways, together with the cost of each highway. Now yo...

原题：https://pintia.cn/problem-sets/994805342720868352/problems/994805482919673856 A graph which is connected and acyclic can be considered a tree. The height of the tree depends on the selected root. ...

原题：https://pintia.cn/problem-sets/994805342720868352/problems/994805480801550336A Digital Library contains millions of books, stored according to their titles, authors, key words of their abstracts,...

原题：https://pintia.cn/problem-sets/994805342720868352/problems/994805462535356416Given any string of N (≥5) characters, you are asked to form the characters into the shape of U. For example, helloworl...

原题：https://pintia.cn/problem-sets/994805342720868352/problems/994805446102073344Given a string, you are supposed to output the length of the longest symmetric sub-string. For example, given Is PAT&am...

原题：https://pintia.cn/problem-sets/994805342720868352/problems/994805440976633856A Binary Search Tree (BST) is recursively defined as a binary tree which has the following properties:The left subtr...

原题：https://pintia.cn/problem-sets/994805342720868352/problems/994805406352654336题目大意题目不难，主要输入3个数，A,B,C，然后判断A+B是否大于C，但是主要整数的范围是[−263,263][-2^{63},2^{63}][−263,263]，若以若用long int存储，则可能会超出表示范围，具体可参照 计算...