Problem Authors

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