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Dc Prf-SPOJ-Classical.Ps
Archives of the Sphere Online Judge classical problemset Editors: 1 u.swarnaprakash NghiaHemant Nguyen Verma Hoang Blue Mary Andrés Leonardo Rojas LukasŁukasz Mai Kuszner Adrian Kosowski Duarte Stephenbalaji Merriman Adrian Kuegel Brian YashRahul Garg Camilo Andrés Varela León Spooky RobertNeal Zane Rychcicki Jin Bin Paritosh Aggarwal VOJChinh problem Nguyen setters Thanh-Vy Hua Le Đôn Khue ?????Paweł Dobrzycki Roman Sol Csaba Noszaly KonradPatryk Pomykalski Piwakowski Wanderley Guimaraes Analysis Mode (Bogardan ZhangFrank RafaelTaizhi Arteaga Michał Czuczman Hellkite) MauroMiorel PaliiPersano Jelani Nelson (Minilek) Abhilash I P.KasthuriTomek Czajka Rangan• Daniel Gómez Didier Paul Draper SebastianPripoae Toni Kanthak Ngô Minh Đu+’c Bobby Xiao BartłomiejReinier César Kowalski Mujica Neal Wu Darek Dereniowski IvanHdez Alfonso Prasanna Nguye^~n Ha Du+o+ng OlamendyRadu Grigore Piotr Łowiec Nguyen Minh Hieu MartinMark Gordon Bader Robin Nittka Qu Jun dqdLovro Puzar Ahmed Aly Fabio Avellaneda PiotrLordxfastx Piotrowski Adam Dzedzej Hoang Hong Quan TomaszRuslan Sennov Goluch Ajay Somani Nguyen Van Quang Huy Rahulabhijith reddy d Nikola P Borisov Tomas. Bob Diego Satoba Mir Wasi Ahmed Pawel Gawrychowski Luka Kalinovcic Matthew Reeder yandry pérez Rafal clemente Marco Gallotta Tomasz Niedzwiecki Pavel Kuznetsov Andrés Mejía-Posada Robert Gerbicz Andres Galvis Chen Xiaohong Slobodan Simon Gog Alfonso2 Peterssen Kashyap KBR Krzysztof Kluczek John Rizzo Jose Daniel Rdguez Race with time Abel Nieto Rodriguez Michał Małafiejski Bogusław K. Osuch Ivan Metelsky Gogu Marian Phenomenal Le Trong Dao Nguyen Dinh Tu Muntasir Azam Khan 2 Last updated: 2009-10-09 09:00:05 3 Preface This electronic material contains a set of algorithmic problems, forming the archives of the Sphere Online Judge (http://www.spoj.pl/), classical problemset. -
Watson Daniel.Pdf (5.294Mb)
Source Code Stylometry and Authorship Attribution for Open Source by Daniel Watson A thesis presented to the University of Waterloo in fulfillment of the thesis requirement for the degree of Master of Mathematics in Computer Science Waterloo, Ontario, Canada, 2019 c Daniel Watson 2019 Author's Declaration I hereby declare that I am the sole author of this thesis. This is a true copy of the thesis, including any required final revisions, as accepted by my examiners. I understand that my thesis may be made electronically available to the public. ii Abstract Public software repositories such as GitHub make transparent the development history of an open source software system. Source code commits, discussions about new features and bugs, and code reviews are stored and carefully attributed to the appropriate developers. However, sometimes governments may seek to analyze these repositories, to identify citi- zens who contribute to projects they disapprove of, such as those involving cryptography or social media. While developers who seek anonymity may contribute under assumed identi- ties, their body of public work may be characteristic enough to betray who they really are. The ability to contribute anonymously to public bodies of knowledge is extremely impor- tant to the future of technological and intellectual freedoms. Just as in security hacking, the only way to protect vulnerable individuals is by demonstrating the means and strength of available attacks so that those concerned may know of the need and develop the means to protect themselves. In this work, we present a method to de-anonymize source code contributors based on the authors' intrinsic programming style. -
Prolog W Formie Dialogu Pomiędzy Studentem I (Cokolwiek) Sokratycznym Profesorem
Teksty Drugie 2007, 1-2, s.127-143 Prolog w formie dialogu pomiędzy studentem i (cokolwiek) sokratycznym Profesorem. Bruno Latour Tłumaczenie zbiorowe pod kierunkiem Krzysztofa Abriszewskiego http://rcin.org.pl Bruno UTOUR Prolog w formie dialogu pomiędzy studentem i (cokolwiek) sokratycznym Profesorem^ {Gabinet w London School of Economics, późne wtorkowe popołudnie w lutym, przed pójściem do Beaver na kwartę piwa. Słychać ciche, ale natarc^we pukanie. Student za gląda do gabinetu.) Student: - Czy nie przeszkadzam? Profesor: - Nie, to i tak są moje godziny pracy. Proszę wejść i usiąść. S: - Dziękuję. P: - Mniemam, że... czuje się Pan trochę zagubiony? S: - Właściwie tak. Muszę przyznać, iż trudno mi zastosować Teorię Aktora-Sieci w moich badaniach nad organizacjami. P: - Nic dziwnego - nie można zastosować jej do niczego! S: - Ale uczono nas... mam na myśli... wydawało mi się, że to tutaj całkiem gorący towar. Czy mówi Pan, że jest zupełnie bezużyteczna? P: - Mogłaby być użyteczna, ale tylko jeśli nie „stosuje” się do niczego. S: - Przepraszam, ale czy to ma być jakaś sztuczka Zen? Muszę Pana ostrzec, że jestem jedynie doktorantem w badaniach nad organizacjami, więc proszę nie ocze kiwać... Nie jestem w temacie, jeśli chodzi o francuską myśl, przeczytałem trochę Mille Plateaux, ale nie bardzo zrozumiałem, o co tam chodzi... 1 Tłumaczenia zbiorowego pod kierunkiem Krzysztofa Abriszewskiego dokonali: Adrian Gahbler, Andrzej Kilanowski, Paweł Mil, Radosław Naworski, Natalia Organista, Dawid Piekło, Robert Szatkowski, Wojciech Wańczyk, Jakub Wolski. ^ http://rcin.org.pl Prezentacje P: - Przepraszam. Nie chciałem się wymądrzać. Chodzi o to, że ANT (skrót od ang. Actor-Network Theory - przyp. tłum.) przede wszystlsim jest negatywnym ro zumowaniem. -
World Record Lunch
World Record Lunch A group of people is trying to beat the world record for the largest number of people having lunch at the same time. In order achieve this goal, they are using the country's largest bridge and they have decided to arrange the tables following the shape of the letter 'S'. The table layout can be described by 4 integers: NH, NV, H and V. The two first integers, NH and NV, represent respectively the number or rows and number of columns in the layout. The last two integers represent respectively the number of tables in each row and column. For a given layout, the tables are numbered consecutively, starting with table #1 in the top-right corner. The following figure illustrates several possible layouts: Thousands of groups of people are expected to come, and the organizers have to define where to seat everyone. Each group needs a certain number of tables and they do not share tables with other groups. Furthermore, a group wants their tables to be together and not split among rows and columns, that is, they want a set of consecutive tables either on the same row or on the same column. If this condition cannot be met, the group prefers to go away and have lunch at another place. The groups also enjoy having some privacy and prefer unoccupied adjacent tables, that is, no one at the table exactly before the first table of the group, and no one at the table exactly after the last table of the group. If this happens, we say that the group found a private place. -
Code Hunt: Experience with Coding Contests at Scale
Code Hunt: Experience with Coding Contests at Scale Judith Bishop R. Nigel Horspool Tao Xie Nikolai Tillmann, Microsoft Research University of Victoria University of Illinois at Jonathan de Halleux Redmond, WA, USA Victoria, BC, Canada Urbana-Champaign Microsoft Research [email protected] [email protected] IL, USA Redmond, WA, USA [email protected] nikolait, [email protected] Abstract—Mastering a complex skill like programming takes Code Hunt adds another dimension – that of puzzles. It is with many hours. In order to encourage students to put in these hours, these ideas in mind that we conceived Code Hunt, a game for we built Code Hunt, a game that enables players to program coding against the computer by solving a sequence of puzzles against the computer with clues provided as unit tests. The game of increasing complexity. Code Hunt is unique among coding has become very popular and we are now running worldwide systems and among games in that it combines the elements of contests where students have a fixed amount of time to solve a set of puzzles. This paper describes Code Hunt and the contest both to produce just what we need to get students to put in those experience it offers. We then show some early results that hours of practice to hone their programming skills. Along the demonstrate how Code Hunt can accurately discriminate between way, they also learn to understand testing, since the game is good and bad coders. The challenges of creating and selecting based on unit tests. Code Hunt has been used by over 50,000 puzzles for contests are covered. -
Curriculum Vitae
Curriculum Vitae Jakub Pachocki [email protected] Work experience 2016 { present Harvard School of Engineering and Applied Sciences Postdoctoral Fellow Education 2013 { 2016 Carnegie Mellon University PhD in Computer Science Thesis: Graphs and Beyond: Faster Algorithms for High Dimen- sional Convex Optimization Advisor: Gary Miller 2010 { 2013 University of Warsaw Bachelor's Degree in Computer Science Publications author names in alphabetical order • M. Cohen, Y. T. Lee, G. Miller, J. Pachocki and A. Sidford. Geometric Median in Nearly Linear Time. 48th Annual Symposium on the Theory of Computing (STOC 2016). • A. Ene, G. Miller, J. Pachocki and A. Sidford. Routing under Balance. 48th Annual Symposium on the Theory of Computing (STOC 2016). • M. Cygan, F. Fomin, A. Golovnev, A. Kulikov, I. Mihajlin, J. Pachocki and A. Soca la. Tight bounds for graph homomorphism and subgraph isomorphism. 27th Annual Symposium on Discrete Algorithms (SODA 2016). • M. Cohen, C. Musco and J. Pachocki. Online Row Sampling. 19th In- ternational Workshop on Approximation Algorithms for Combinatorial Optimization Problems (APPROX 2016). • M. Mitzenmacher, J. Pachocki, R. Peng, C. E. Tsourakakis and S. C. Xu. Scalable Large Near-Clique Detection in Large-Scale Networks via Sampling. 21th International Conference on Knowledge Discovery and Data Mining (KDD 2015). • M. Cohen, G. Miller, R. Kyng, J. Pachocki,p R. Peng, A. Rao and S. C. Xu. Solving SDD Systems in Nearly O(m log n) Time. 46th Annual Symposium on the Theory of Computing (STOC 2014). • M. Cygan, J. Pachocki, A. Socala. The Hardness of Subgraph Isomor- phism. arXiv preprint, 2015. • M. Cohen, G. Miller, J. -
321444 1 En Bookbackmatter 533..564
Index 1 Abdominal aortic aneurysm, 123 10,000 Year Clock, 126 Abraham, 55, 92, 122 127.0.0.1, 100 Abrahamic religion, 53, 71, 73 Abundance, 483 2 Academy award, 80, 94 2001: A Space Odyssey, 154, 493 Academy of Philadelphia, 30 2004 Vital Progress Summit, 482 Accelerated Math, 385 2008 U.S. Presidential Election, 257 Access point, 306 2011 Egyptian revolution, 35 ACE. See artificial conversational entity 2011 State of the Union Address, 4 Acquired immune deficiency syndrome, 135, 2012 Black Hat security conference, 27 156 2012 U.S. Presidential Election, 257 Acxiom, 244 2014 Lok Sabha election, 256 Adam, 57, 121, 122 2016 Google I/O, 13, 155 Adams, Douglas, 95, 169 2016 State of the Union, 28 Adam Smith Institute, 493 2045 Initiative, 167 ADD. See Attention-Deficit Disorder 24 (TV Series), 66 Ad extension, 230 2M Companies, 118 Ad group, 219 Adiabatic quantum optimization, 170 3 Adichie, Chimamanda Ngozi, 21 3D bioprinting, 152 Adobe, 30 3M Cloud Library, 327 Adonis, 84 Adultery, 85, 89 4 Advanced Research Projects Agency Network, 401K, 57 38 42, 169 Advice to a Young Tradesman, 128 42-line Bible, 169 Adwaita, 131 AdWords campaign, 214 6 Affordable Care Act, 140 68th Street School, 358 Afghan Peace Volunteers, 22 Africa, 20 9 AGI. See Artificial General Intelligence 9/11 terrorist attacks, 69 Aging, 153 Aging disease, 118 A Aging process, 131 Aalborg University, 89 Agora (film), 65 Aaron Diamond AIDS Research Center, 135 Agriculture, 402 AbbVie, 118 Ahmad, Wasil, 66 ABC 20/20, 79 AI. See artificial intelligence © Springer Science+Business Media New York 2016 533 N. -
Theoretical and Practical Aspects of Programming Contest Ratings
Department of Informatics Faculty of Mathematics, Physics and Informatics Comenius University, Bratislava, Slovakia Theoretical and Practical Aspects of Programming Contest Ratings Dizertaèná práca v odbore doktorandského ¹túdia: 11-80-9 teoretická informatika RNDr. Michal Fori¹ek ©koliteľ: prof. RNDr. Branislav Rovan, Ph.D. Bratislava, 2009 iii Acknowledgements First and foremost, I would like to thank my advisor prof. Branislav Rovan for being an exceptional and inspirational teacher and advisor. I'm also grateful to other faculty members { and students { at our university. Thanks to many of them, both studying and teaching here has been a pleasure, and that is one of the factors that significantly influenced my career choices so far. But without any doubt my biggest thanks must go to my fiancée Jana. Without her constant love, support and understanding I would not be able to finish this Thesis. iv Contents Abstract (English) 1 Abstrakt (Slovensky) 3 1 Introduction 5 1.1 Goals of the Thesis . .5 1.2 Outline of this Thesis . .6 1.3 Motivation . .7 2 Background 11 2.1 Programming contests landscape . 11 2.1.1 Important programming contests . 11 2.1.2 Programming contests terminology . 14 2.1.3 Overview of the existing research on competitions . 16 2.2 Rating Systems and Rating Algorithms . 20 2.2.1 Introduction . 21 2.2.2 Overview of the Elo rating system . 22 2.2.3 TopCoder's event format . 23 2.2.4 TrueSkill(TM) rating algorithm . 25 2.2.5 eGenesis rating algorithm . 25 2.3 Item Response Theory . 26 2.3.1 Introduction and motivation . -
PROGRAMMING EXERCISES EVALUATION SYSTEMS an Interoperability Survey
PROGRAMMING EXERCISES EVALUATION SYSTEMS An Interoperability Survey Ricardo Queirós1 and José Paulo Leal2 1CRACS & INESC-Porto LA & DI-ESEIG/IPP, Porto, Portugal 2CRACS & INESC-Porto LA, Faculty of Sciences, University of Porto, Porto, Portugal Keywords: Learning Objects, Standards, Interoperability, Programming Exercises Evaluation. Abstract: Learning computer programming requires solving programming exercises. In computer programming courses teachers need to assess and give feedback to a large number of exercises. These tasks are time consuming and error-prone since there are many aspects relating to good programming that should be considered. In this context automatic assessment tools can play an important role helping teachers in grading tasks as well to assist students with automatic feedback. In spite of its usefulness, these tools lack integration mechanisms with other eLearning systems such as Learning Management Systems, Learning Objects Repositories or Integrated Development Environments. In this paper we provide a survey on programming evaluation systems. The survey gathers information on interoperability features of these systems, categorizing and comparing them regarding content and communication standardization. This work may prove useful to instructors and computer science educators when they have to choose an assessment system to be integrated in their e-Learning environment. 1 INTRODUCTION These surveys seldom address the PES interoperability features, although they generally One of the main goals in computer programming agree on the importance of the subject, due to the courses is to develop students’ understanding of the comparatively small number of systems that programming principles. The understanding of implement them. This lack of interoperability is felt programming concepts is closely related with the at content and communication levels. -
Declaratively Solving Tricky Google Code Jam Problems with Prolog-Based Eclipse CLP System
Declaratively solving tricky Google Code Jam problems with Prolog-based ECLiPSe CLP system Sergii Dymchenko Mariia Mykhailova Independent Researcher Independent Researcher [email protected] [email protected] ABSTRACT produces correct answers for all given test cases within a In this paper we demonstrate several examples of solving certain time limit (4 minutes for the \small" input and 8 challenging algorithmic problems from the Google Code Jam minutes for the \large" one). programming contest with the Prolog-based ECLiPSe sys- tem using declarative techniques: constraint logic program- GCJ competitors can use any freely available programming ming and linear (integer) programming. These problems language or system (including the ECLiPSe2 system de- were designed to be solved by inventing clever algorithms scribed in this paper). Most other competitions restrict par- and efficiently implementing them in a conventional imper- ticipants to a limited set of popular programming languages ative programming language, but we present relatively sim- (typically C++, Java, C#, Python). Many contestants par- ple declarative programs in ECLiPSe that are fast enough ticipate not only in GCJ, but also in other contests, and to find answers within the time limit imposed by the con- use the same language across all competitions. When the test rules. We claim that declarative programming with GCJ problem setters design the problems and evaluate their ECLiPSe is better suited for solving certain common kinds complexity, they keep in mind mostly this crowd of seasoned of programming problems offered in Google Code Jam than algorithmists. imperative programming. We show this by comparing the mental steps required to come up with both kinds of solu- We show that some GCJ problems that should be challeng- tions. -
[Xtrl] Yahoo Is Shutting Down Its Groups Re
Steve Spicer Oct 23 #1471 Re: Yahoo is shutting down its groups Thanks for keeping the dream alive from me as well, Bob. Peter K. Campbell On Tue, 22 Oct 2019 at 2:59 pm, Henk Meijerink hmeijeri2@... [xTRL] Peter K. Campbell Oct 23 #1470 Re: Yahoo is shutting down its groups The group will continue only as a bare basic mail list... Understand what's changing in Yahoo Groups Yahoo has made the decision to no longer allow users to Bob Backway Oct 21 #1469 Fw: [xTRL] Yahoo is shutting down its groups I own a few Yahoo groups and have converted some to IO. My understanding is that the Yahoo groups with continue, but all attachments and extra features such David Connor Oct 21 #1468 Re: Yahoo is shutting down its groups Ditto that, Bob. Thanks, Henk. On Tue, 22 Oct 2019 at 10:46 am, 'Vitas Anderson' vitas.anderson@... Henk Meijerink Oct 21 #1467 Re: Yahoo is shutting down its groups Facebook fine with me. Thanks for all your work Bob. Really appreciated by many. Liz Bednall Sent from Yahoo7 Mail on Android On Tue., 22 Oct. 2019 at 10:46 Liz Bednall Oct 21 #1466 Re: Yahoo is shutting down its groups Consolidating to Facebook sounds like a sensible suggestion Bob. And thank you for taking the trouble to curate this group. Best regards Vitas Anderson Mob: Vitas Anderson Oct 21 #1465 Yahoo is shutting down its groups XTRLers, Yahoo is shutting down its groups on December 14. This means this group will not exist after that date. -
Spoj, Topcoder, Github Í Experience May 2014 – Software Engineering Intern, Google, New York
2609 Orchard Ave Los Angeles, CA-90007 Krishna Bharadwaj H +1 310-691-4078 B [email protected] Spoj, TopCoder, Github Í www.krishnabharadwaj.info Experience May 2014 – Software Engineering Intern, Google, New York. Present Worked on the inline browse data computation for git repositories Sep 2012 – Co-founder & Technology Lead, SMERGERS, Bangalore. Jul 2013 SMERGERS is a SME focused Mergers & Acquisitions Platform. Aug 2011 – Full stack Web Developer, BlockBeacon, PricePoint, Bangalore. Aug 2012 Worked remotely with startups in Santa Monica and San Francisco as an independent consultant. Aug 2011 – Founder & Developer, Refer a Geek, Bangalore. Sep 2012 Refer a Geek aimed at bringing the Referral model of recruting beyond any one company. Jul 2009 – Software Engineer, National Instruments India R&D, Bangalore. Jun 2011 Designed and developed physical layer algorithms for WCDMA/HSPA+ in LabVIEW. Education Fall 2013 – Masters in Computer Science, University of Southern California, Los Angeles. Present Student Programmer, Information Sciences Institute(USC) - Working with Dr. Mehdi Yahyanejad June 2009 BE, Information Science, B. M. S. College of Engineering, Bangalore. Microsoft Student Partner, Placement Coordinator & BMS Linux Users Group. Technical Skills & Interests Programming C/C++, Python, LabVIEW, PHP, Javascript Expertise Data Structures & Algorithms – Spoj, TopCoder, Github Databases MySQL, Oracle, MongoDB Web Dev HTML, CSS, jQuery, Django, CodeIgniter OS Windows & Linux system administraton A Others Qt, NumPy, Matplotlib, LTEX