Problem Authors

Problem author Problems Average Difficulty
Zvonimir Medić 1 6.8
Ziyi Tang 2 3.6
Zack Butler 7 4.6
Zachary Geier 1 6.9
Zachary Friggstad 28 4.7
Yujie An 2 7.4
Yuen Chak Fai 2 5.1
Ylvis 1 2.3
Yingtao Tian 3 5.7
Yen Truong 1 8.5
Xiayuan Suo 1 1.6
Xiaoyuan Suo 2 3.7
Xiaomin Chen 5 5.2
Wing-Kin Sung 1 6.9
William Gan Wei Liang 2 7.3
William Fiset 4 4.2
Wenli Looi 5 3.0
Wenda Qiu 3 5.6
Walter Kong 1 7.4
Walter Guttmann 1 6.0
Volodymyr Lyubinets 6 6.1
Vlado Keselj 1 7.7
Vladimir Valyukh 3 6.8
Vinh Pham 1 4.1
Victor Song 1 3.6
Victor Loh Bo Huai 1 7.4
Vegard Sjonfjell 2 3.9
Vamsi Manne 1 2.2
Vaibhav Tulsyan 1 4.6
Unnar Freyr Erlendsson 2 2.2
University of Dallas 1 5.1
Ulle Endriss 1 5.2
Ulf Lundström 23 4.8
Tung Kam Chuen 10 6.6
Truls Amundsen Bjørklund 1 1.3
Truls A. Björklund 1 2.3
Troy Vasiga 3 4.0
Torstein Strømme 16 4.7
Torbjørn Morland 21 4.7
Tony Cai 12 4.6
Tonko Sabolčec 1 3.3
Tom Verhoeff 1 2.7
Tom Rokicki 1 3.1
Tommy Färnqvist 3 4.4
Tom Fuller 1 2.3
Tomas Rokicki 1 6.3
Tómas Ken Magnússon 4 4.6
Tobias Werth 6 4.4
Timon Knigge 19 5.1
Thore Husfeldt 12 4.9
Thomasz Idziaszek 1 5.0
Thomas Lidbetter 6 7.1
Thomas Beuman 4 7.4
Thijs van Ommen 1 7.7
Thierry Lavoie 1 5.7
Tan Jun An 2 3.8
Tähvend Uustalu 1 6.3
Syx Pek 7 5.8
Synopsys 1 5.7
Swen Gaudl 1 6.9
Svetoslav Tzvetkov 1 8.0
Suhendry Effendy 1 1.4
Stuart Hansen 1 3.9
Stjepan Požgaj 1 5.6
Stjepan Glavina 2 5.3
Steven Zeil 11 5.4
Steven Wijaya 2 6.9
Steven Halim 24 5.0
Stein Norheim 7 6.1
Stefan Toman 1 3.3
Stefan Pszczolkowski 1 1.7
Stefan Kraus 1 3.5
Stefan Büttcher 3 5.1
Spencer Pao 1 2.1
Sonny Chan 3 5.2
Sondre Sortland 2 6.9
Simon Lindholm 20 7.2
Simon Klein 1 5.7
Silviu Maniu 2 3.4
Sigurður Jens Albertsson 1 1.4
Sidney Cadot 1 3.4
Sidhant Bansal 2 3.8
Shiplu Hawlader 1 4.9
Shantanu Modak 3 4.7
Shahriar Manzoor 1 6.5
Shaheed Ebrahim 1 2.9
Shafaet Ashraf 1 9.4
Serikzhan S. Kazi 1 3.4
Serikzhan Kazi 1 5.8
Sérgio Crisóstomo 2 3.0
Sean McCulloch 3 7.3
Scott McGowan 1 3.7
Sander Land 1 7.3
Sander Alewijnse 1 9.4
Samuel Tardieu 1 7.9
Samuel Furman 3 3.8
Saketh Are 1 5.6
Ryan Marshall 5 3.8
Ryan Henning 2 5.7
Rujia Liu 5 4.7
Rudy van Vliet 1 5.8
Roger Henriksson 1 4.7
Robin Lee 20 5.5
Robin Christopher Yu 49 7.0
Robert Pilgrim 1 2.5
Robert McGorman 1 2.1
Robert Hochberg 10 5.0
R. Marshall 2 2.8
Richard Peng 5 5.5
Reinier Schmiermann 3 5.0
Raymond van Bommel 10 4.9
Raymond Kang Seng Ing 1 6.5
Raphaël Marinier 2 6.4
Ranald Lam Yun Shao 2 7.2
Ragnar Nevries 1 8.0
Ragnar Groot Koerkamp 19 5.3
Prabhakar Ragde 2 5.2
Piotr Zielinski 1 5.6
Piotr Rudnicki 20 4.5
Piotr Micek 1 7.4
Philip Wellnitz 1 6.0
Petter Elvevoll 2 4.1
Petr Mitrichev 1 6.7
Peter Steele 3 7.6
Peter Košinár 1 5.2
Peter Kluit 1 8.7
Peter Høyer 1 4.7
Per Austrin 114 5.6
Peilin Zhong 2 7.6
Pehr Söderman 18 4.4
Pedro Vasconcelos 4 5.1
Pedro Ribeiro 1 6.2
Pedro Guerreiro 3 5.1
Paweł Komosa 1 7.3
Paweł Idziak 1 2.4
Pawel Gawrychowski 2 8.3
Pavel Petrovic 1 5.1
Paul Wild 9 5.1
Pär Söderhjelm 1 6.4
Pål Grønås Drange 8 4.1
Pål G. Drange 4 6.5
Paco Álvaro 1 7.5
Øyvind Haarberg 4 4.2
Øyvind Grotmol 8 6.8
Owen Kaser 2 5.3
Oskar Werkelin Ahlin 19 4.5
Onno Berrevoets 3 3.3
Ondřej Lhoták 43 5.2
Ómar Högni Guðmarsson 1 1.5
Olivier Bourgeois 1 2.1
Olav Røthe Bakken 7 5.0
Óðinn Eyjólfsson 1 2.3
Nils Gustafsson 35 5.9
Nils Grimsmo 5 4.4
Nils Barlaug 2 6.9
Nikola Pintarić 1 1.3
Nikola Dmitrović 5 1.5
Nicole Hedblom 1 5.9
Nicolas Hardy 3 3.8
Nicholas Sharp 3 2.1
Nguyen Tan Sy Nguyen 1 5.0
Nguyen Dinh Quang Minh 9 7.5
Neha Kapur 1 1.3
Nathan Mytelka 1 6.8
Nathan Backman 4 3.8
Nalin Bhardwaj 1 7.2
Mykola Protsenko 1 3.5
Moritz Kobitzsch 3 5.4
Modan Han 6 4.4
Mislav Bradač 3 6.9
Mislav Balunović 14 5.5
Ming-Yee Iu 1 5.2
Mike Zmuda 1 3.3
Mike Domaratzki 3 5.8
Mikael Goldmann 17 5.5
Miguel Oliveira 6 6.6
Miguel Araújo 6 5.0
Michał Sapalski 1 7.1
Michał Pilipczuk 5 4.6
Michal Forišek 6 3.2
Michael Zündorf 1 6.6
Michael Zmuda 1 1.6
Michael Goldwasser 7 4.9
Michael C Slattery 1 7.2
Michael Bradet-Legris 1 2.4
Micah Stairs 6 6.3
Mees de Vries 27 4.6
Max Wilson 1 2.1
Mattias Akke 5 5.3
Matthias Bayerlein 1 4.1
Matthew Ng Zhen Rui 6 3.8
Matt Davison 3 2.6
Mats Petter Wallander 1 9.3
Mats Petter Pettersson 1 1.3
Matija Milišić 1 7.5
Matias Holte 1 2.9
Mathijs de Weerdt 1 3.4
Martin Tran 5 2.3
Mārtiņš Opmanis 1 9.2
Martin Macko 1 3.3
Martin Kačer 1 6.6
Mårten Wiman 5 6.7
Markus S. Dregi 4 6.5
Markus Fanebust Dregi 1 5.0
Markus Dregi 4 6.3
Mark Theng Kwang Hui 2 7.8
Marko Ivanković 10 4.0
Marko Berezovsky 6 5.2
Mark Gordon 1 7.5
Mark Braganza 1 4.6
Marius Andrei 1 6.5
Mario Nakazawa 1 2.1
Marin Tomić 9 5.2
Margarida Mamede 4 4.7
Marc Vinyals 15 6.1
Marcus Isaksson 1 5.8
Marc Phua Hsiao Meng 3 7.0
Marc Furon 1 6.1
Manuel Freire 1 3.0
Manuel Abellanas 1 8.2
Måns Magnusson 10 4.3
Malcolm Sharpe 11 6.3
Maj Stenmark 3 2.6
Mahbubul Hasan 2 6.3
Magnus Øian 2 5.4
Magne Vikjord 3 6.5
Maciej Liskiewicz 1 6.8
Łukasz Matylla 1 7.9
Lukáš Poláček 50 5.5
Luka Kalinovčić 5 5.5
Luis Hernández Corbato 1 8.8
Lucas Wood 1 3.9
Louis Jachiet 1 8.1
Loke Gustafsson 1 7.0
Li Cheuk Ting 2 6.9
Liam Keliher 23 4.4
Lewin Gan 4 6.5
Leung Kai Man 1 8.5
Leszek Horwath 1 8.0
Leo Osvald 2 6.5
Lee Chun Yin 1 8.5
Lech Duraj 10 6.2
Law Wai Hon 2 3.8
Lau Lap Chi 1 6.6
Lars Åström 3 3.7
Larry Pyeatt 2 3.7
Larry D. Pyeatt 2 6.2
Lap Chi Lau 1 6.1
Lalitha Kuppa 3 3.8
Kyle See 2 6.9
Kwee Lung Sin 3 6.9
Kuan Wei Heng 1 3.7
Kristof Unterweger 1 6.3
Kristoffer Arnsfelt Hansen 1 6.1
Kent Williams-King 4 6.6
Kathleen Ericson 7 2.9
Karl Lundstig 1 1.6
Karl Johan Sande Heimark 9 5.2
Kai Chen 3 4.7
Justin Park 1 2.9
Justas Klimavičius 1 3.7
Junbin Teng 1 7.2
Julian Neeleman 1 7.6
Julian Dörfler 1 6.0
Julian Baldus 1 6.0
Julia Mårtensson 2 4.2
Jozef Šiška 1 3.3
Josse van Dobben de Bruyn 7 4.3
Joshua T. Guerin 7 2.9
Joshua Moerman 3 6.4
Joseph Swernofsky 3 4.2
José Paulo Leal 1 4.0
Josef Cibulka 1 6.6
Josee Tasse 1 5.4
Jorke de Vlas 5 5.2
Joris van Rantwijk 5 5.6
Joran van Apeldoorn 1 5.1
Jon Marius Venstad 10 5.2
Jon Ander Gómez 3 5.3
John Dethridge 4 5.7
John Cigas 4 1.9
John Bonomo 48 4.9
Johan Sannemo 110 5.2
Jingbo Shang 8 5.8
Jimmy Mårdell 20 5.9
Jim Grimmett 10 5.1
Jiju Poovvancheri 1 2.5
Jesper Öqvist 4 5.9
Jeroen de Jong 1 6.5
Jeroen Bransen 8 3.9
Jennifer Shimada 1 6.1
Jennifer Lhoták 1 6.4
Jeffrey Peng 1 5.8
Jeff Kinne 1 1.5
Jean Niklas L'orange 22 5.1
Jean-Christophe Filliâtre 1 4.0
Javier Gómez Serrano 3 5.6
Jason Pham 1 4.3
Jan Stoklasa 1 6.6
Jan Kuipers 8 6.1
Jan Elffers 4 5.6
James Stanley 1 2.7
James Hughes 1 4.3
James Feher 5 1.9
Jalal Almhana 1 2.1
Jakub Závodný 1 7.7
Jakub Pachocki 2 7.7
Jakob Krainz 3 4.9
Jaehyun Park 1 6.7
Jacques-Henri Jourdan 1 5.9
Jacob Plachta 3 4.5
Jacob Merizia 1 4.6
Jack Rosenthal 3 1.9
Jaap Eldering 5 6.3
Ivor Page 3 4.3
Ivona Bezakova 7 6.5
Ivan Paljak 7 5.3
Ivan Katanić 6 6.6
Isaac Lee 2 6.5
Isaac Arvestad 4 3.9
Irvan Jahja 8 5.9
Irina Kostitsyna 1 4.6
Ioana Ilena 1 4.8
Igor Naverniouk 1 5.7
Ian Munro 1 2.9
Hung Chun Ho 1 8.6
Hugo Eberhard 1 7.2
Hubert Teo Hua Kian 3 7.2
Howard Cheng 31 3.8
Hon Man Hin 3 5.9
Henry Xia 4 6.2
Henry Wang 2 4.3
Henrik Eriksson 4 3.3
Hélène Verhaeghe 1 2.7
Harry Smit 9 5.6
Harrison Fang 2 3.3
Haochen Chen 4 6.0
Hans Wennborg 1 5.7
Håkan Strömberg 1 2.8
Gustav Matula 1 2.8
Gustav Kalander 2 9.1
Gunnar Kreitz 11 5.0
Gu Jin 3 7.0
Grzegorz Herman 3 7.5
Gregor Behnke 6 4.8
Greg Hamerly 99 3.8
Graeme Zinck 2 4.6
Graeme Kemkes 1 2.9
Gordon V. Cormack 46 4.9
Gordon Cormack 1 7.8
Goran Žužić 9 6.4
Goran Gašić 3 5.5
Godmar Back 42 4.0
Gilbert Lee 1 5.5
Gerben Stavenga 3 6.2
Gabriela Velazquez-Pergola 1 4.4
Freyr Bergsteinsson 1 8.4
Fredrik Svensson 4 6.5
Fredrik Niemelä 2 4.4
Fredrik Hernqvist 2 4.9
Frane Kurtović 1 5.2
François Aubry 2 3.9
Francisco Criado 1 4.8
Florin Ghesu 1 7.4
Filip Barl 7 4.0
Filiberto Fuentes 1 7.2
Felix Halim 1 2.6
Eyleifur Ingþór Bjarkason 1 5.1
Evan Quach 1 4.1
Etienne Vouga 11 5.5
Erling Alf Ellingsen 1 6.4
Erik Amirell Eklöf 5 6.6
Erik Aas 3 6.9
Eric Shade 1 4.0
Eric Hervet 1 2.1
Enrique Martín Martín 1 8.1
Emma Enström 3 2.8
Emilio Vivancos 1 5.1
Eirik Reksten 1 6.8
Egor Dranischnikow 3 4.4
Edvard Kristoffer Neset Karlsen 1 4.9
Eduard Kalinicenko 1 8.1
Ed Skochinski 1 8.0
Don Reble 3 4.9
Dominik Gleich 17 5.5
Domagoj Ćevid 2 6.2
Domagoj Bradač 1 5.5
Dillon Cutaiar 1 2.0
Derek Kisman 3 7.3
Deon Nicholas 5 5.0
David Zheng 5 5.0
David Venhoek 2 4.7
David Van Brackle 2 6.5
David van Brackle 1 7.1
David Sturgill 74 3.9
David Poplawski 1 5.5
David García Soriano 2 6.6
David Arthur 1 7.4
Dave Hotchkiss 2 2.0
Darko Aleksic 7 4.2
Darcy Best 7 4.1
Dante Bencivenga 2 5.4
Daniel Stefankovic 5 7.6
Daniel Robbins 1 7.5
Daniel Paleka 1 6.5
Daniel Moyer 1 2.2
Daniel Lokshtanov 4 6.7
Daniel Gil 1 1.9
Daniel Espling 3 5.9
Daniel Brinkers 2 2.4
Dan Folescu 1 1.8
Damian Straszak 2 5.3
Daan van Gent 2 5.8
Cosmin Negruseri 4 6.4
Colin Peppler 1 3.5
Clark Cucinell 1 2.5
Christopher Raphael 1 5.9
Christoph Dürr 2 5.2
Christian Renner 2 4.7
Christian Neverdal Jonassen 2 2.2
Christian Ledig 1 4.6
Christian Jonassen 1 1.4
Christian Hundt 1 8.0
Chin Zhan Xiong 1 7.9
Chidambaram Annamalai 1 7.8
Chengyu Lin 3 6.2
Charles L. A. Clarke 1 4.2
Chan Pak Hei 1 7.5
Chan Pak Hay 1 4.1
Chad Mourning 1 2.7
Calvin Li 1 2.0
Calvin Godfrey 1 6.8
Bryce Sandlund 4 5.7
Bruno Rahle 7 3.5
Bruno Ploumhans 1 4.0
Bruce S. Elenbogen 1 2.9
Bruce Elenbogen 1 5.5
Brook Tamir 1 7.8
Brian Chen 1 2.8
Branimir Filipović 3 3.3
Brandon Fuller 13 4.5
Bo Zhou 2 9.0
Bowen Yu 33 6.4
Børge Nordli 2 5.0
Bob Roos 19 5.5
Bob Pilgrim 2 3.8
Boaz Pat-El 4 5.2
Boas Kluiving 2 5.8
Björn Martinsson 2 7.3
Björn Magnusson 1 9.3
Björn Hegerfors 1 6.7
Bjarki Ágúst Guðmundsson 21 5.0
Birk Tjelmeland 2 4.7
Bergur Snorrason 16 4.6
Ben Zhang 1 6.9
Benjamin Reidys 3 4.5
Ben Bradshaw 1 5.4
Bartosz Walczak 2 6.4
Bartholomew Furrow 3 6.1
BAPC jury 2019 1 5.8
Babak Behsaz 6 4.3
Atli Fannar Franklín 6 4.6
Arup Guha 3 5.6
Arthur van Goethem 2 3.9
Aron Granberg 1 2.5
Arne Alex 3 5.5
Arnav Sastry 8 4.2
Arnar Bjarni Arnarson 3 2.0
Arkadiusz Pawlik 4 7.8
Ariana Herbst 2 6.4
Arash Behpour 1 4.3
Antti Laaksonen 10 5.4
Antonio Jurić 6 4.8
Anton Grbin 2 7.2
Anthony Han 4 5.0
Ante Derek 1 5.7
Andy Nguyen 2 8.5
Andy Harrington 2 6.1
Andriy Katkov 2 3.5
Andrew Warner 1 6.5
Andrew Stankevich 1 8.0
Andrew Nuxoll 1 4.7
Andrew Harrington 7 3.7
Andrew Gove 1 3.7
Andrew Baas 1 6.0
Andrew Ahnn 2 3.4
André Susano Pinto 2 7.4
Andreas Schuh 1 1.7
Andreas Lundblad 3 7.2
Andreas Björklund 22 5.8
Ana Paula Tomás 3 4.4
Amar Topalovic 2 6.4
Alex ten Brink 1 6.2
Alex Lind 2 3.1
Alex Li 4 6.1
Alex Brodsky 2 5.8
Alexander Wei 1 5.8
Alexander Scheel 2 3.5
Alexander Rass 4 6.4
Alexander Dietsch 5 5.5
Akshay Goel 1 4.2
Adrian Satja Kurdija 18 4.9
Adrian Kügel 3 4.8
Adam Polak 6 5.7
Abe Wits 5 5.4
Abel Molina 1 4.5
A.Augusto de Sousa 1 6.0
Aaron Deever 2 6.1
Aarav Singh 2 4.4