Snakeflute-优快云博客

原创 OpenGL 窗口创建

使用OpenGL实用库的第一步是初始化GLUT:glutInit(&argc, argv); 接着, 是说明展示窗口的标题: glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB); 下面就是指定显示窗口需要显示的内容, 使用OpenGL函数创建一个图并把图的定义传给GLUT函数glutDisplayFunc(即将图赋给显

2017-03-17 17:22:07 887

原创 HDU 4027 - Can you answer these queries?(线段树)

Can you answer these queries?Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 65768/65768 K (Java/Others) Total Submission(s): 15043 Accepted Submission(s): 3529Problem Description A lot of

2017-03-15 14:55:16 393

原创 POJ 3368 - Frequent values(离散化ST)

Frequent values Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 18364 Accepted: 6602 DescriptionYou are given a sequence of n integers a1 , a2 , … , an in non-decreasing order

2017-03-13 20:54:08 505

原创 Codeforces 367B - Sereja ans Anagrams(map)

B. Sereja ans Anagrams time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output Sereja has two sequences a and b and number p. Sequence a consists o

2017-03-13 16:00:19 401

原创 POJ 3191 - The Moronic Cowmpouter(进制转换)

The Moronic Cowmpouter Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 4192 Accepted: 2168 DescriptionInexperienced in the digital arts, the cows tried to build a calculating eng

2017-03-13 14:41:29 556

原创 POJ 3186 - Treats for the Cows(DP)

Treats for the Cows Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 5729 Accepted: 2963 DescriptionFJ has purchased N (1 <= N <= 2000) yummy treats for the cows who get money for

2017-03-13 14:27:42 394

原创 Codeforces 367A - Sereja and Algorithm(前缀和)

A. Sereja and Algorithm time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output Sereja loves all sorts of algorithms. He has recently come up with

2017-03-10 18:21:17 361

原创 Codeforces 366D - Dima and Trap Graph(DFS)

D. Dima and Trap Graph time limit per test3 seconds memory limit per test256 megabytes inputstandard input outputstandard output Dima and Inna love spending time together. The problem is, Seryozha

2017-03-10 15:36:58 361

原创 Codeforces 366C - Dima and Salad(DP)

C. Dima and Salad time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output Dima, Inna and Seryozha have gathered in a room. That’s right, someone’s

2017-03-09 19:42:03 587

原创 Codeforces 450D - Jzzhu and Cities(最短路)

D. Jzzhu and Cities time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output Jzzhu is the president of country A. There are n cities numbered from

2017-03-06 13:13:20 531

原创 Codeforces 362D - Fools and Foolproof Roads(并查集+优先队列)

D. Fools and Foolproof Roads time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output You must have heard all about the Foolland on your Geography l

2017-03-03 17:35:34 464

原创 Codeforces 552C - Vanya and Scales(数学)

C. Vanya and Scales time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output Vanya has a scales for weighing loads and weights of masses w0, w1, w2,

2017-03-02 17:56:41 425

原创 Codeforces 552B - Vanya and Books(数学)

B. Vanya and Books time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output Vanya got an important task — he should enumerate books in the library a

2017-03-02 17:46:27 600

原创 Codeforces 551C - GukiZ hates Boxes(贪心二分)

C. GukiZ hates Boxes time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output Professor GukiZ is concerned about making his way to school, because

2017-03-01 21:22:03 443

原创 Codeforces 550D - Regular Bridge(构造)

D. Regular Bridge time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output An undirected graph is called k-regular, if the degrees of all its verti

2017-02-26 21:36:08 385

原创 Codeforces 550C - Divisibility by Eight(思维)

C. Divisibility by Eight time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output You are given a non-negative integer n, its decimal representatio

2017-02-25 15:00:14 427

原创 Codeforces 363D - Renting Bikes(贪心二分)

D. Renting Bikes time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output A group of n schoolboys decided to ride bikes. As nobody of them has a bik

2017-02-24 14:47:07 791

原创 POJ 1182 - 食物链(种类并查集)

食物链 Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 67959 Accepted: 20089 Description动物王国中有三类动物A,B,C，这三类动物的食物链构成了有趣的环形。A吃B， B吃C，C吃A。现有N个动物，以1－N编号。每个动物都是A,B,C中的一种，但是我们并不知道它到

2017-02-23 16:40:03 436

原创 Codeforces 361C - Levko and Array Recovery(贪心)

C. Levko and Array Recovery time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output Levko loves array a1, a2, … , an, consisting of integers, very

2017-02-22 20:34:47 765

原创 Codeforces 548C - Mike and Frog(暴力循环节)

C. Mike and Frog time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output Mike has a frog and a flower. His frog is named Xaniar and his flower is n

2017-02-21 18:03:09 827

原创 POJ 2431 - Expedition(贪心)

Expedition Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 14212 Accepted: 4020 DescriptionA group of cows grabbed a truck and ventured on an expedition deep into the jungle.

2017-02-20 18:25:15 465

原创 Codeforces 544B - Sea and Islands(构造)

B. Sea and Islands time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output A map of some object is a rectangular field consisting of n rows and n c

2017-02-13 14:29:23 721

原创 Codeforces 667B - Coat of Anticubism(思维)

B. Coat of Anticubism time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard outputAs some of you know, cubism is a trend in art, where the problem of con

2017-02-05 12:46:20 542

原创 Codeforces 621B - Wet Shark and Bishops(思维)

B. Wet Shark and Bishops time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output Today, Wet Shark is given n bishops on a 1000 by 1000 grid. Both

2017-01-30 10:30:43 492

原创 Codeforces 615B - Longtail Hedgehog(DP)

B. Longtail Hedgehog time limit per test3 seconds memory limit per test256 megabytes inputstandard input outputstandard output This Christmas Santa gave Masha a magic picture and a pencil. The pic

2017-01-27 11:43:10 378

原创 Codeforces 604C - Alternative Thinking(思维)

C. Alternative Thinking time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output Kevin has just recevied his disappointing results on the USA Ident

2017-01-24 23:03:51 686

原创 Codeforces 604B - Alan Wake(二分)

B. More Cowbell time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output Kevin Sun wants to move his precious collection of n cowbells from Naperth

2017-01-24 22:44:41 403

原创 Codeforces 602B - Approximating a Constant Range(DP)

B. Approximating a Constant Range time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output When Xellos was doing a practice course in university, h

2017-01-24 01:30:36 557

原创 CodeForces 593B - Anton and Lines(思维)

B. Anton and Lines time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output The teacher gave Anton a large geometry homework, but he didn’t do it (a

2017-01-18 22:25:07 476

原创 CodeForces 593A - 2Char(暴力)

A. 2Char time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output Andrew often reads articles in his favorite magazine 2Char. The main feature of t

2017-01-18 15:25:46 356

原创 CodeForces 588C - Duff and Weight Lifting(思维)

C. Duff and Weight Lifting time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output Recently, Duff has been practicing weight lifting. As a hard pra

2017-01-18 00:09:37 449

原创 CodeForces 581C - Developing Skills(模拟)

C. Developing Skills time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output Petya loves computer games. Finally a game that he’s been waiting for

2017-01-15 21:55:12 420

原创 CodeForces 584D - Dima and Lisa(数论)

D. Dima and Lisa time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output Dima loves representing an odd number as the sum of multiple primes, and L

2017-01-15 20:28:45 597

原创 CodeForces 584C - Marina and Vasya(构造)

C. Marina and Vasya time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output Marina loves strings of the same length and Vasya loves when there is a

2017-01-15 18:28:43 390

原创 CodeForces 581C - GCD Table(思维)

C. GCD Table time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output The GCD table G of size n × n for an array of positive integers a of length n

2017-01-14 12:37:41 513

原创 POJ 2828 - Buy Tickets(线段树)

Buy Tickets Time Limit: 4000MS Memory Limit: 65536K Total Submissions: 19367 Accepted: 9587 DescriptionRailway tickets were difficult to buy around the Lunar New Year in China, so we mus

2017-01-14 00:41:29 444

原创 HDU 1950 - Bridging signals(LIS)

Bridging signalsTime Limit: 5000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 2114 Accepted Submission(s): 1386Problem Description ‘Oh no, they’ve done i

2017-01-11 15:10:06 308

原创 HDU 1257 - 最少拦截系统(LIS)

最少拦截系统Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 37591 Accepted Submission(s): 14778Problem Description 某国为了防御敌国的导弹袭击,发展出一种导弹拦截系统.但是这种

2017-01-11 14:52:21 331

原创 POJ 2528 - Mayor's posters(模拟)

Mayor’s posters Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 60890 Accepted: 17606 DescriptionThe citizens of Bytetown, AB, could not stand that the candidates in the mayor

2016-12-09 18:55:50 410

原创 CodeForces 673D - Bear and Two Paths(构造)

D. Bear and Two Paths time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output Bearland has n cities, numbered 1 through n. Cities are connected vi

2016-12-09 17:47:51 475

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