03 2020 档案

大数的运算(详细思路+代码)
摘要：大整数的存储 我们可以定义一个结构体来存储： struct bigNum{ int d[1000]; //存储大整数 int len; //大整数的长度 bigNum() { memset(d, 0, sizeof(d)); len = 0; } }; 在我们输入大数时，一般先用字符串读入，然后再把 阅读全文
posted @ 2020-03-15 18:28 Hu_YaYa 阅读(214) 评论(0) 推荐(0)
埃氏筛、欧拉筛
摘要：前言 对于1~n范围内素数的查找，我们常用的二重循环暴力算法的复杂度是O(n2)，如果利用开根缩小范围的时间复杂度也无非是在O( n n n\sqrt n nn ​),而，这些算法对于n在105以内都是可以接受的，但是如果需要更大范围的素数表，这些算法将显得力不从心。下面将介绍更加高效的算法。 埃氏 阅读全文
posted @ 2020-03-14 11:07 Hu_YaYa 阅读(122) 评论(0) 推荐(0)
最大公约数和最小公倍数
摘要：最大公约数 假设用gcd(a,b)来表示a和b的最大公约数。 首先认识一个定理： 假设a、b均为正整数，则gcd(a, b) =gcd(b, a%b)。 证明： 设a = kb + r，其中k和r分别为a除以b得到的商和余数。 则有r = a - kb成立。 设d为a和b的一个公约数， 那么由r = 阅读全文
posted @ 2020-03-13 15:39 Hu_YaYa 阅读(33) 评论(0) 推荐(0)
1044 Shopping in Mars (25分)【元素查找】
摘要：1044 Shopping in Mars (25分) Shopping in Mars is quite a different experience. The Mars people pay by chained diamonds. Each diamon... 阅读全文
posted @ 2020-03-11 17:56 Hu_YaYa 阅读(10) 评论(0) 推荐(0)
1085 Perfect Sequence (25分)【二分法】
摘要：1085 Perfect Sequence (25分) Given a sequence of positive integers and another positive integer p. The sequence is said to be a per... 阅读全文
posted @ 2020-03-11 13:35 Hu_YaYa 阅读(19) 评论(0) 推荐(0)
快速幂、矩阵快速幂（原理+模板）
摘要：快速幂 首先，快速幂是用来解决什么问题的？ 给定三个正整数a、b、m(a<109,b<1018,1<m<109)，求ab%m 对于这个问题，如果使用暴力来处理显然是不行的，O(b)的复杂度支持b<108都已经很艰难了，更何况1018 快速幂的做法是基于二分的思想，因此也常称为二分幂。快速幂基于一下事 阅读全文
posted @ 2020-03-10 22:16 Hu_YaYa 阅读(259) 评论(0) 推荐(1)
1038 Recover the Smallest Number (30分)【贪心】
摘要：1038 Recover the Smallest Number (30分) Given a collection of number segments, you are supposed to recover the smallest number from... 阅读全文
posted @ 2020-03-10 15:21 Hu_YaYa 阅读(24) 评论(0) 推荐(0)
1067 Sort with Swap(0, i) (25分)【贪心】
摘要：1067 Sort with Swap(0, i) (25分) Given any permutation of the numbers {0, 1, 2,..., N−1}, it is easy to sort them in increasing ord... 阅读全文
posted @ 2020-03-10 14:42 Hu_YaYa 阅读(42) 评论(0) 推荐(0)
1037 Magic Coupon (25分)【贪心】
摘要：1037 Magic Coupon (25分) The magic shop in Mars is offering some magic coupons. Each coupon has an integer N printed on it, meaning... 阅读全文
posted @ 2020-03-10 13:47 Hu_YaYa 阅读(14) 评论(0) 推荐(0)
1070 Mooncake (25分)【贪心】
摘要：1070 Mooncake (25分) Mooncake is a Chinese bakery product traditionally eaten during the Mid-Autumn Festival. Many types of filling... 阅读全文
posted @ 2020-03-10 12:01 Hu_YaYa 阅读(21) 评论(0) 推荐(0)
1048 Find Coins (25分)【散列】
摘要：1048 Find Coins (25分) Eva loves to collect coins from all over the universe, including some other planets like Mars. One day she v... 阅读全文
posted @ 2020-03-09 19:57 Hu_YaYa 阅读(13) 评论(0) 推荐(0)
1050 String Subtraction (20分)【字符串】
摘要：1050 String Subtraction (20分) Given two strings S​1​​ and S​2​​, S=S​1​​−S​2​​ is defined to be the remaining string after taking ... 阅读全文
posted @ 2020-03-09 19:23 Hu_YaYa 阅读(18) 评论(0) 推荐(0)
1041 Be Unique (20分)【散列】
摘要：1041 Be Unique (20分) Being unique is so important to people on Mars that even their lottery is designed in a unique way. The rule ... 阅读全文
posted @ 2020-03-09 19:05 Hu_YaYa 阅读(20) 评论(0) 推荐(0)
1092 To Buy or Not to Buy (20分)【字符串处理/散列】
摘要：1092 To Buy or Not to Buy (20分) Eva would like to make a string of beads with her favorite colors so she went to a small shop to b... 阅读全文
posted @ 2020-03-09 17:24 Hu_YaYa 阅读(22) 评论(0) 推荐(0)
1084 Broken Keyboard (20分)【字符串处理】
摘要：1084 Broken Keyboard (20分) On a broken keyboard, some of the keys are worn out. So when you type some sentences, the characters c... 阅读全文
posted @ 2020-03-09 12:19 Hu_YaYa 阅读(23) 评论(0) 推荐(0)
1095 Cars on Campus (30分)【结构体排序】
摘要：1095 Cars on Campus (30分) Zhejiang University has 8 campuses and a lot of gates. From each gate we can collect the in/out times an... 阅读全文
posted @ 2020-03-08 15:07 Hu_YaYa 阅读(15) 评论(0) 推荐(0)
1080 Graduate Admission (30分)【结构体排序】
摘要：1080 Graduate Admission (30分) It is said that in 2011, there are about 100 graduate schools ready to proceed over 40,000 applicati... 阅读全文
posted @ 2020-03-08 10:40 Hu_YaYa 阅读(15) 评论(0) 推荐(0)
1083 List Grades (25分)【结构体排序】
摘要：1083 List Grades (25分) Given a list of N student records with name, ID and grade. You are supposed to sort the records with respec... 阅读全文
posted @ 2020-03-07 13:43 Hu_YaYa 阅读(16) 评论(0) 推荐(0)
1075 PAT Judge (25分)【结构体排序】
摘要：1075 PAT Judge (25分) The ranklist of PAT is generated from the status list, which shows the scores of the submissions. This time y... 阅读全文
posted @ 2020-03-07 13:02 Hu_YaYa 阅读(20) 评论(0) 推荐(0)
1055 The World's Richest (25分)【结构体排序】
摘要：1055 The World's Richest (25分) Forbes magazine publishes every year its list of billionaires based on the annual ranking of the w... 阅读全文
posted @ 2020-03-06 19:08 Hu_YaYa 阅读(0) 评论(0) 推荐(0)
1028 List Sorting (25分)【结构体排序】
摘要：1028 List Sorting (25分) Excel can sort records according to any column. Now you are supposed to imitate this function. Input Speci... 阅读全文
posted @ 2020-03-06 16:12 Hu_YaYa 阅读(24) 评论(0) 推荐(0)
1025 PAT Ranking (25分)【结构体排序】
摘要：1025 PAT Ranking (25分) Programming Ability Test (PAT) is organized by the College of Computer Science and Technology of Zhejiang U... 阅读全文
posted @ 2020-03-06 15:18 Hu_YaYa 阅读(21) 评论(0) 推荐(0)
1062 Talent and Virtue (25分)【结构体排序】
摘要：1062 Talent and Virtue (25分) About 900 years ago, a Chinese philosopher Sima Guang wrote a history book in which he talked about p... 阅读全文
posted @ 2020-03-06 13:15 Hu_YaYa 阅读(14) 评论(0) 推荐(0)
1082 Read Number in Chinese (25分)【字符串处理】
摘要：1082 Read Number in Chinese (25分) Given an integer with no more than 9 digits, you are supposed to read it in the traditional Chin... 阅读全文
posted @ 2020-03-04 12:31 Hu_YaYa 阅读(27) 评论(0) 推荐(0)
1077 Kuchiguse (20分)【字符串处理】
摘要：1077 Kuchiguse (20分) The Japanese language is notorious for its sentence ending particles. Personal preference of such particles c... 阅读全文
posted @ 2020-03-04 11:33 Hu_YaYa 阅读(17) 评论(0) 推荐(0)
1035 Password (20分)【字符串处理】
摘要：1035 Password (20分) To prepare for PAT, the judge sometimes has to generate random passwords for the users. The problem is that th... 阅读全文
posted @ 2020-03-03 23:07 Hu_YaYa 阅读(20) 评论(0) 推荐(0)
1073 Scientific Notation (20分)【字符串处理】
摘要：1073 Scientific Notation (20分) Scientific notation is the way that scientists easily handle very large numbers or very small numbe... 阅读全文
posted @ 2020-03-03 17:53 Hu_YaYa 阅读(17) 评论(0) 推荐(0)
1061 Dating (20分)【字符串处理】
摘要：1061 Dating (20分) Sherlock Holmes received a note with some strange strings: Let's date! 3485djDkxh4hhGE 2984akDfkkkkggEdsb s&hgsf... 阅读全文
posted @ 2020-03-03 16:50 Hu_YaYa 阅读(18) 评论(0) 推荐(0)
1058 A+B in Hogwarts (20分)【进制转换】
摘要：1058 A+B in Hogwarts (20分) If you are a fan of Harry Potter, you would know the world of magic has its own currency system -- as H... 阅读全文
posted @ 2020-03-03 15:44 Hu_YaYa 阅读(19) 评论(0) 推荐(0)
1027 Colors in Mars (20分)【进制转换】
摘要：1027 Colors in Mars (20分) People in Mars represent the colors in their computers in a similar way as the Earth people. That is, a ... 阅读全文
posted @ 2020-03-03 15:25 Hu_YaYa 阅读(15) 评论(0) 推荐(0)
1031 Hello World for U (20分)【图形输出】
摘要：1031 Hello World for U (20分) Given any string of N (≥5) characters, you are asked to form the characters into the shape of U. For ... 阅读全文
posted @ 2020-03-03 11:39 Hu_YaYa 阅读(11) 评论(0) 推荐(0)
1036 Boys vs Girls (25分)【元素查找】
摘要：1036 Boys vs Girls (25分) This time you are asked to tell the difference between the lowest grade of all the male students and the... 阅读全文
posted @ 2020-03-03 11:07 Hu_YaYa 阅读(20) 评论(0) 推荐(0)
1065 A+B and C (64bit) (20分)【简单模拟，溢出判断】
摘要：1065 A+B and C (64bit) (20分) Given three integers A, B and C in [−2​^63​​,2^​63​​], you are supposed to tell whether A+B>C. Input ... 阅读全文
posted @ 2020-03-02 18:16 Hu_YaYa 阅读(17) 评论(0) 推荐(0)
1046 Shortest Distance (20分) 【简单模拟】
摘要：1046 Shortest Distance (20分) The task is really simple: given N exits on a highway which forms a simple cycle, you are supposed t... 阅读全文
posted @ 2020-03-02 17:50 Hu_YaYa 阅读(21) 评论(0) 推荐(0)
1042 Shuffling Machine (20分)【简单模拟】
摘要：1042 Shuffling Machine (20分) Shuffling is a procedure used to randomize a deck of playing cards. Because standard shuffling techni... 阅读全文
posted @ 2020-03-02 17:20 Hu_YaYa 阅读(25) 评论(0) 推荐(0)