Problem Authors

Problem author Problems Average Difficulty
Zvonimir Medić 1 6.6
Ziyi Tang 2 3.6
Zack Butler 7 4.7
Zachary Geier 1 7.6
Zachary Friggstad 28 4.6
Yujie An 2 6.9
Yuen Chak Fai 2 5.4
Ylvis 1 2.1
Yingtao Tian 3 5.4
Yen Truong 1 5.2
Xiayuan Suo 1 1.5
Xiaoyuan Suo 2 3.6
Xiaomin Chen 5 5.0
Wing-Kin Sung 1 6.8
William Gan Wei Liang 2 7.3
William Fiset 4 4.3
Wenli Looi 5 3.1
Wenda Qiu 3 5.6
Walter Guttmann 1 6.1
Volodymyr Lyubinets 6 5.6
Vlado Keselj 1 7.1
Vladimir Valyukh 3 6.7
Vinh Pham 1 6.0
Victor Loh Bo Huai 1 7.3
Vegard Sjonfjell 2 4.0
Vamsi Manne 1 3.5
Vaibhav Tulsyan 1 4.2
Unnar Freyr Erlendsson 2 2.3
University of Dallas 1 5.2
Ulle Endriss 1 4.8
Ulf Lundström 23 4.7
Tung Kam Chuen 10 6.4
Truls Amundsen Bjørklund 1 1.3
Truls A. Björklund 1 2.2
Troy Vasiga 3 4.0
Torstein Strømme 16 4.5
Torbjørn Morland 21 4.6
Tony Cai 12 4.6
Tonko Sabolčec 1 3.5
Tom Verhoeff 1 2.9
Tom Rokicki 1 3.1
Tommy Färnqvist 3 4.3
Tom Fuller 1 2.6
Tomas Rokicki 1 5.7
Tómas Ken Magnússon 4 4.4
Tobias Werth 6 4.2
Timon Knigge 18 4.7
Thore Husfeldt 7 5.1
Thomasz Idziaszek 1 4.5
Thomas Lidbetter 6 6.9
Thomas Beuman 4 7.3
Thijs van Ommen 1 7.8
Thierry Lavoie 1 5.8
Tan Jun An 2 3.5
Tähvend Uustalu 1 6.1
Syx Pek 7 5.5
Synopsys 1 5.8
Swen Gaudl 1 7.0
Svetoslav Tzvetkov 1 7.8
Suhendry Effendy 1 1.5
Stuart Hansen 1 3.8
Stjepan Požgaj 1 4.2
Stjepan Glavina 2 5.4
Steven Zeil 11 5.3
Steven Wijaya 2 8.0
Steven Halim 24 5.0
Stein Norheim 7 5.8
Stefan Toman 1 3.5
Stefan Pszczolkowski 1 1.7
Stefan Kraus 1 3.3
Stefan Büttcher 3 5.4
Spencer Pao 1 2.1
Sonny Chan 3 4.3
Sondre Sortland 2 6.7
Simon Lindholm 18 7.0
Simon Klein 1 5.7
Silviu Maniu 2 3.2
Sigurður Jens Albertsson 1 1.4
Sidney Cadot 1 3.5
Sidhant Bansal 2 3.6
Shiplu Hawlader 1 4.9
Shantanu Modak 1 7.2
Shahriar Manzoor 1 6.3
Shaheed Ebrahim 1 3.0
Shafaet Ashraf 1 9.3
Serikzhan S. Kazi 1 4.0
Serikzhan Kazi 1 5.7
Sérgio Crisóstomo 2 3.9
Sean McCulloch 3 7.1
Scott McGowan 1 4.2
Sander Land 1 7.2
Sander Alewijnse 1 9.2
Samuel Tardieu 1 6.8
Samuel Furman 3 3.0
Saketh Are 1 5.8
Ryan Marshall 5 3.8
Ryan Henning 2 5.4
Rujia Liu 5 4.9
Rudy van Vliet 1 5.9
Roger Henriksson 1 4.6
Robin Lee 19 5.4
Robin Christopher Yu 49 6.8
Robert Pilgrim 1 2.4
Robert McGorman 1 2.1
Robert Hochberg 10 4.8
R. Marshall 2 2.9
Richard Peng 5 5.5
Raymond van Bommel 10 4.7
Raymond Kang Seng Ing 1 5.7
Raphaël Marinier 2 5.8
Ranald Lam Yun Shao 2 7.4
Ragnar Nevries 1 7.9
Ragnar Groot Koerkamp 15 4.8
Prabhakar Ragde 2 4.6
Piotr Zielinski 1 5.8
Piotr Rudnicki 20 4.4
Piotr Micek 1 7.2
Philip Wellnitz 1 7.0
Petter Elvevoll 2 4.3
Petr Mitrichev 1 6.6
Peter Steele 3 7.3
Peter Košinár 1 6.8
Peter Kluit 1 7.8
Peter Høyer 1 4.4
Per Austrin 112 5.5
Peilin Zhong 2 7.2
Pehr Söderman 16 4.6
Pedro Vasconcelos 4 4.8
Pedro Ribeiro 1 7.8
Pedro Guerreiro 3 5.5
Paweł Komosa 1 7.1
Paweł Idziak 1 2.4
Pawel Gawrychowski 2 8.2
Pavel Petrovic 1 5.2
Paul Wild 5 5.5
Pär Söderhjelm 1 5.8
Pål Grønås Drange 6 4.6
Pål G. Drange 4 6.3
Paco Álvaro 1 7.7
Øyvind Haarberg 4 4.3
Øyvind Grotmol 8 6.4
Owen Kaser 1 5.2
Oskar Werkelin Ahlin 19 4.4
Onno Berrevoets 2 1.7
Ondřej Lhoták 43 5.0
Ómar Högni Guðmarsson 1 1.5
Olivier Bourgeois 1 2.1
Olav Røthe Bakken 7 4.9
Óðinn Eyjólfsson 1 2.5
Nils Gustafsson 29 5.7
Nils Grimsmo 5 4.4
Nils Barlaug 2 6.7
Nikola Pintarić 1 1.2
Nikola Dmitrović 5 1.5
Nicole Hedblom 1 5.4
Nicolas Hardy 3 3.0
Nicholas Sharp 3 2.0
Nguyen Tan Sy Nguyen 1 4.5
Nguyen Dinh Quang Minh 9 7.3
Neha Kapur 1 1.3
Nathan Mytelka 1 6.4
Nathan Backman 4 3.8
Nalin Bhardwaj 1 6.6
Mykola Protsenko 1 3.5
Moritz Kobitzsch 3 5.5
Modan Han 6 4.3
Mislav Bradač 3 7.1
Mislav Balunović 14 5.4
Ming-Yee Iu 1 5.5
Mike Zmuda 1 3.2
Mike Domaratzki 3 5.7
Mikael Goldmann 17 5.3
Miguel Oliveira 6 6.4
Miguel Araújo 6 5.0
Michał Sapalski 1 7.6
Michał Pilipczuk 5 4.5
Michal Forišek 6 3.1
Michael Zmuda 1 1.6
Michael Goldwasser 7 4.8
Michael C Slattery 1 7.2
Michael Bradet-Legris 1 2.4
Micah Stairs 6 6.4
Mees de Vries 24 4.6
Max Wilson 1 2.1
Mattias Akke 4 5.2
Matthias Bayerlein 1 4.1
Matthew Ng Zhen Rui 6 4.5
Matt Davison 3 2.7
Mats Petter Pettersson 1 1.3
Matija Milišić 1 7.4
Matias Holte 1 3.0
Mathijs de Weerdt 1 3.5
Martin Tran 5 2.4
Mārtiņš Opmanis 1 9.3
Martin Macko 1 3.2
Martin Kačer 1 6.6
Mårten Wiman 5 6.6
Markus S. Dregi 4 6.3
Markus Fanebust Dregi 1 5.2
Markus Dregi 4 6.0
Mark Theng Kwang Hui 2 7.8
Marko Ivanković 10 4.0
Marko Berezovsky 6 4.9
Mark Gordon 1 7.6
Mark Braganza 1 5.0
Marius Andrei 1 6.4
Mario Nakazawa 1 1.9
Marin Tomić 9 5.3
Margarida Mamede 4 4.6
Marc Vinyals 15 6.0
Marcus Isaksson 1 5.4
Marc Furon 1 6.1
Manuel Freire 1 3.3
Manuel Abellanas 1 7.4
Måns Magnusson 9 4.3
Malcolm Sharpe 11 6.2
Maj Stenmark 2 3.0
Mahbubul Hasan 2 5.9
Magnus Øian 2 5.1
Magne Vikjord 3 6.1
Maciej Liskiewicz 1 6.7
Łukasz Matylla 1 7.6
Lukáš Poláček 50 5.5
Luka Kalinovčić 5 5.3
Luis Hernández Corbato 1 8.8
Lucas Wood 1 4.0
Louis Jachiet 1 8.2
Li Cheuk Ting 2 5.9
Liam Keliher 17 4.4
Lewin Gan 4 6.1
Leung Kai Man 1 8.3
Leszek Horwath 1 8.0
Leo Osvald 2 6.7
Lee Chun Yin 1 8.7
Lech Duraj 10 6.0
Law Wai Hon 2 3.7
Lau Lap Chi 1 6.3
Lars Åström 3 3.6
Larry Pyeatt 2 3.6
Larry D. Pyeatt 2 5.4
Lap Chi Lau 1 7.1
Lalitha Kuppa 3 3.0
Kyle See 2 6.1
Kwee Lung Sin 3 6.5
Kuan Wei Heng 1 3.6
Kristof Unterweger 1 6.4
Kristoffer Arnsfelt Hansen 1 5.8
Kent Williams-King 4 6.3
Kathleen Ericson 7 3.0
Karl Lundstig 1 1.7
Karl Johan Sande Heimark 9 4.9
Kai Chen 3 4.5
Justin Park 1 2.8
Justas Klimavičius 1 3.5
Junbin Teng 1 7.0
Julian Neeleman 1 8.2
Julian Dörfler 1 7.0
Julian Baldus 1 7.0
Jozef Šiška 1 3.1
Josse van Dobben de Bruyn 7 4.0
Joshua T. Guerin 7 3.0
Joshua Moerman 3 6.5
Joseph Swernofsky 3 4.2
José Paulo Leal 1 4.2
Josef Cibulka 1 6.6
Josee Tasse 1 5.2
Jorke de Vlas 2 5.5
Joris van Rantwijk 5 5.3
Joran van Apeldoorn 1 4.8
Jon Marius Venstad 10 5.1
Jon Ander Gómez 3 5.2
John Dethridge 4 5.7
John Cigas 4 1.8
John Bonomo 46 4.8
Johan Sannemo 83 5.8
Jingbo Shang 8 5.5
Jimmy Mårdell 18 5.5
Jim Grimmett 10 4.8
Jesper Öqvist 4 5.7
Jeroen de Jong 1 5.7
Jeroen Bransen 8 3.8
Jennifer Shimada 1 4.6
Jennifer Lhoták 1 6.1
Jeffrey Peng 1 5.8
Jeff Kinne 1 1.4
Jean Niklas L'orange 22 4.9
Jean-Christophe Filliâtre 1 4.1
Javier Gómez Serrano 3 5.5
Jason Pham 1 4.2
Jan Stoklasa 1 6.6
Jan Kuipers 8 6.0
Jan Elffers 4 5.6
James Stanley 1 2.7
James Feher 5 2.1
Jalal Almhana 1 2.1
Jakub Závodný 1 8.1
Jakub Pachocki 2 7.7
Jakob Krainz 3 4.9
Jaehyun Park 1 7.0
Jacques-Henri Jourdan 1 5.9
Jacob Plachta 3 4.4
Jacob Merizia 1 4.2
Jack Rosenthal 3 1.8
Jaap Eldering 5 5.9
Ivor Page 3 4.3
Ivona Bezakova 7 6.6
Ivan Paljak 7 5.1
Ivan Katanić 6 6.5
Isaac Lee 2 6.6
Isaac Arvestad 4 3.8
Irvan Jahja 8 5.9
Irina Kostitsyna 1 4.3
Ioana Ilena 1 4.7
Igor Naverniouk 1 6.9
Ian Munro 1 2.9
Hung Chun Ho 1 8.8
Hubert Teo Hua Kian 3 7.2
Howard Cheng 31 3.8
Hon Man Hin 3 5.5
Henry Xia 4 6.2
Henry Wang 2 4.3
Henrik Eriksson 4 3.0
Hélène Verhaeghe 1 2.5
Harry Smit 6 5.4
Harrison Fang 2 3.3
Haochen Chen 4 5.9
Hans Wennborg 1 5.5
Gustav Matula 1 2.6
Gunnar Kreitz 11 4.9
Gu Jin 3 6.8
Grzegorz Herman 3 7.6
Gregor Behnke 6 4.7
Greg Hamerly 99 3.8
Graeme Zinck 2 4.4
Graeme Kemkes 1 2.9
Gordon V. Cormack 46 4.8
Gordon Cormack 1 7.6
Goran Žužić 9 6.2
Goran Gašić 3 5.6
Godmar Back 42 4.0
Gilbert Lee 1 5.4
Gerben Stavenga 3 5.8
Gabriela Velazquez-Pergola 1 3.9
Fredrik Svensson 4 6.4
Fredrik Niemelä 2 4.5
Fredrik Hernqvist 2 4.8
Frane Kurtović 1 5.0
François Aubry 2 4.0
Francisco Criado 1 4.8
Florin Ghesu 1 7.8
Filip Barl 7 4.1
Filiberto Fuentes 1 6.5
Felix Halim 1 2.4
Eyleifur Ingþór Bjarkason 1 4.9
Evan Quach 1 3.2
Etienne Vouga 11 5.3
Erling Alf Ellingsen 1 6.3
Erik Amirell Eklöf 3 5.9
Erik Aas 3 6.9
Eric Shade 1 4.0
Eric Hervet 1 2.1
Enrique Martín Martín 1 8.0
Emma Enström 3 3.0
Emilio Vivancos 1 4.9
Eirik Reksten 1 3.8
Egor Dranischnikow 3 4.3
Edvard Kristoffer Neset Karlsen 1 4.8
Eduard Kalinicenko 1 8.0
Ed Skochinski 1 7.8
Don Reble 3 4.7
Dominik Gleich 17 5.5
Domagoj Ćevid 2 6.4
Domagoj Bradač 1 6.0
Dillon Cutaiar 1 2.0
Derek Kisman 3 7.5
Deon Nicholas 5 4.8
David Zheng 5 4.8
David Venhoek 2 4.6
David Van Brackle 2 6.5
David van Brackle 1 6.5
David Sturgill 74 3.8
David Poplawski 1 5.5
David García Soriano 2 6.1
David Arthur 1 7.3
Dave Hotchkiss 2 2.0
Darko Aleksic 7 4.1
Darcy Best 7 3.9
Dante Bencivenga 2 5.5
Daniel Stefankovic 5 7.7
Daniel Robbins 1 7.5
Daniel Paleka 1 7.3
Daniel Moyer 1 2.2
Daniel Lokshtanov 4 6.2
Daniel Gil 1 2.0
Daniel Espling 3 5.7
Daniel Brinkers 2 2.4
Dan Folescu 1 1.7
Damian Straszak 2 5.4
Daan van Gent 2 6.9
Cosmin Negruseri 4 6.3
Colin Peppler 1 3.7
Clark Cucinell 1 2.5
Christopher Raphael 1 5.5
Christoph Dürr 2 4.7
Christian Renner 2 4.6
Christian Neverdal Jonassen 2 2.1
Christian Ledig 1 4.4
Christian Jonassen 1 1.4
Christian Hundt 1 7.9
Chin Zhan Xiong 1 7.6
Chidambaram Annamalai 1 7.9
Chengyu Lin 3 6.2
Charles L. A. Clarke 1 4.3
Chan Pak Hei 1 6.6
Chan Pak Hay 1 4.1
Chad Mourning 1 2.7
Calvin Li 1 1.9
Calvin Godfrey 1 5.4
Bryce Sandlund 4 5.4
Bruno Rahle 7 3.6
Bruno Ploumhans 1 4.4
Bruce S. Elenbogen 1 2.7
Bruce Elenbogen 1 5.2
Brook Tamir 1 7.0
Brian Chen 1 2.8
Branimir Filipović 3 3.3
Brandon Fuller 13 4.4
Bo Zhou 2 9.0
Bowen Yu 33 6.1
Børge Nordli 2 5.7
Bob Roos 9 5.5
Bob Pilgrim 2 3.8
Boaz Pat-El 4 4.9
Boas Kluiving 1 5.4
Björn Martinsson 2 6.6
Björn Magnusson 1 9.1
Björn Hegerfors 1 7.6
Bjarki Ágúst Guðmundsson 18 4.7
Birk Tjelmeland 2 4.8
Bergur Snorrason 12 4.5
Ben Zhang 1 6.8
Benjamin Reidys 3 5.0
Ben Bradshaw 1 4.8
Bartosz Walczak 2 6.3
Bartholomew Furrow 3 6.5
BAPC jury 2019 1 6.9
Babak Behsaz 6 4.3
Atli Fannar Franklín 6 4.9
Arup Guha 3 5.4
Arthur van Goethem 2 3.8
Arne Alex 3 5.6
Arnav Sastry 8 4.1
Arnar Bjarni Arnarson 3 2.1
Arkadiusz Pawlik 4 8.0
Ariana Herbst 2 5.5
Arash Behpour 1 3.1
Antti Laaksonen 8 5.4
Antonio Jurić 6 4.9
Anton Grbin 2 7.5
Anthony Han 4 5.3
Ante Derek 1 6.9
Andy Nguyen 2 8.5
Andy Harrington 2 6.5
Andriy Katkov 2 3.8
Andrew Warner 1 6.2
Andrew Stankevich 1 8.5
Andrew Nuxoll 1 4.5
Andrew Harrington 7 3.6
Andrew Gove 1 3.3
Andrew Baas 1 5.7
Andrew Ahnn 2 4.4
André Susano Pinto 2 8.1
Andreas Schuh 1 1.7
Andreas Lundblad 3 7.4
Andreas Björklund 21 5.5
Ana Paula Tomás 3 3.9
Amar Topalovic 2 6.4
Alex ten Brink 1 5.1
Alex Lind 2 3.6
Alex Li 4 5.9
Alex Brodsky 1 6.9
Alexander Wei 1 5.9
Alexander Scheel 2 3.4
Alexander Rass 4 6.3
Alexander Dietsch 4 5.0
Akshay Goel 1 4.2
Adrian Satja Kurdija 18 4.7
Adrian Kügel 3 4.8
Adam Polak 6 5.7
Abe Wits 4 5.8
Abel Molina 1 4.7
A.Augusto de Sousa 1 6.6
Aaron Deever 2 6.1
Aarav Singh 2 4.6