Problem Authors

Problem author Problems Average Difficulty
Aarav Singh 2 4.4
Aaron Deever 1 5.5
A.Augusto de Sousa 1 7.1
Abel Molina 1 4.3
Abe Wits 4 5.8
Adam Polak 6 5.7
Adrian Kügel 3 4.7
Adrian Satja Kurdija 18 4.7
Akshay Goel 1 4.0
Alexander Dietsch 4 4.8
Alexander Rass 4 6.3
Alexander Scheel 2 3.3
Alexander Wei 1 6.0
Alex Brodsky 1 6.8
Alex Li 4 6.1
Alex ten Brink 1 5.5
Amar Topalovic 2 7.4
Ana Paula Tomás 3 4.5
Andreas Björklund 21 5.5
Andreas Lundblad 3 7.3
Andreas Schuh 1 1.7
André Susano Pinto 2 8.1
Andrew Ahnn 1 2.4
Andrew Baas 1 4.6
Andrew Gove 1 3.2
Andrew Harrington 7 3.5
Andrew Nuxoll 1 5.1
Andrew Stankevich 1 8.4
Andrew Warner 1 6.2
Andriy Katkov 2 4.1
Andy Harrington 2 6.6
Andy Nguyen 2 8.6
Ante Derek 1 6.5
Anthony Han 4 5.5
Anton Grbin 2 7.6
Antonio Jurić 6 4.8
Antti Laaksonen 6 5.3
Ariana Herbst 2 5.5
Arkadiusz Pawlik 4 7.3
Arnav Sastry 8 4.0
Arne Alex 3 5.8
Arthur van Goethem 2 3.7
Arup Guha 3 5.3
Atli Fannar Franklín 6 4.7
Babak Behsaz 6 4.3
Bartholomew Furrow 3 6.2
Bartosz Walczak 2 6.0
Ben Bradshaw 1 4.7
Benjamin Reidys 1 4.6
Ben Zhang 1 6.8
Bergur Snorrason 6 4.7
Birk Tjelmeland 2 4.5
Bjarki Ágúst Guðmundsson 15 4.7
Björn Hegerfors 1 7.4
Boas Kluiving 1 5.6
Boaz Pat-El 4 5.0
Bob Pilgrim 2 3.9
Bob Roos 9 5.1
Børge Nordli 1 6.6
Bowen Yu 32 6.0
Bo Zhou 2 9.0
Brandon Fuller 13 4.5
Branimir Filipović 3 3.5
Brian Chen 1 2.7
Bruce Elenbogen 1 5.1
Bruce S. Elenbogen 1 2.4
Bruno Rahle 7 3.6
Bryce Sandlund 3 4.4
Chad Mourning 1 2.9
Chan Pak Hay 1 4.2
Chan Pak Hei 1 7.0
Charles L. A. Clarke 1 3.8
Chengyu Lin 3 6.6
Chidambaram Annamalai 1 7.3
Chin Zhan Xiong 1 6.6
Christian Hundt 1 7.9
Christian Jonassen 1 1.5
Christian Ledig 1 4.1
Christian Neverdal Jonassen 2 2.1
Christian Renner 2 4.5
Christoph Dürr 2 4.7
Christopher Raphael 1 5.7
Clark Cucinell 1 2.6
Cosmin Negruseri 4 5.9
Damian Straszak 2 6.1
Dan Folescu 1 1.7
Daniel Brinkers 2 2.4
Daniel Espling 3 5.7
Daniel Gil 1 1.8
Daniel Lokshtanov 4 6.6
Daniel Moyer 1 2.4
Daniel Paleka 1 7.5
Daniel Robbins 1 6.5
Daniel Stefankovic 5 7.7
Dante Bencivenga 2 5.4
Darcy Best 7 3.9
Darko Aleksic 7 4.1
Dave Hotchkiss 2 1.9
David Arthur 1 7.3
David García Soriano 2 6.0
David Poplawski 1 5.4
David Sturgill 74 3.9
David van Brackle 1 6.6
Deon Nicholas 5 4.6
Derek Kisman 3 7.4
Dillon Cutaiar 1 2.1
Domagoj Bradač 1 6.1
Domagoj Ćevid 2 6.8
Dominik Gleich 17 5.6
Don Reble 3 4.1
Ed Skochinski 1 8.1
Eduard Kalinicenko 1 8.1
Egor Dranischnikow 3 4.3
Eirik Reksten 1 7.8
Emilio Vivancos 1 4.6
Emma Enström 3 3.0
Enrique Martín Martín 1 8.2
Eric Hervet 1 2.0
Eric Shade 1 4.0
Erik Aas 3 7.3
Erik Amirell Eklöf 1 8.6
Etienne Vouga 10 4.8
Felix Halim 1 2.3
Filiberto Fuentes 1 6.7
Filip Barl 7 4.0
Florin Ghesu 1 8.0
Francisco Criado 1 5.1
François Aubry 2 4.9
Frane Kurtović 1 6.4
Fredrik Niemelä 2 4.9
Fredrik Svensson 4 6.3
Gerben Stavenga 3 5.9
Gilbert Lee 1 5.4
Godmar Back 32 3.8
Goran Gašić 3 6.0
Goran Žužić 9 6.2
Gordon Cormack 1 7.8
Gordon V. Cormack 46 4.9
Graeme Kemkes 1 2.9
Graeme Zinck 2 4.6
Greg Hamerly 96 3.9
Gregor Behnke 6 4.8
Grzegorz Herman 3 7.5
Gu Jin 3 6.6
Gunnar Kreitz 11 4.9
Gustav Matula 1 2.7
Hans Wennborg 1 5.5
Haochen Chen 4 6.1
Harrison Fang 2 4.4
Harry Smit 6 5.4
Hélène Verhaeghe 1 2.5
Henrik Eriksson 4 3.1
Henry Wang 1 2.7
Hon Man Hin 3 6.4
Howard Cheng 25 4.0
Hubert Teo Hua Kian 3 7.0
Hung Chun Ho 1 8.5
Ian Munro 1 2.9
Igor Naverniouk 1 6.5
Ioana Ilena 1 5.3
Irina Kostitsyna 1 4.0
Irvan Jahja 8 5.7
Isaac Arvestad 4 3.5
Isaac Lee 2 6.5
Ivan Katanić 5 6.8
Ivan Paljak 7 5.0
Ivona Bezakova 7 6.6
Ivor Page 3 4.2
Jaap Eldering 5 6.2
Jack Rosenthal 3 1.9
Jacob Merizia 1 4.4
Jacob Plachta 3 4.4
Jacques-Henri Jourdan 1 6.3
Jaehyun Park 1 6.6
Jakob Krainz 3 5.1
Jakub Pachocki 2 7.4
Jakub Závodný 1 8.1
Jalal Almhana 1 2.0
James Feher 5 1.9
James Stanley 1 2.8
Jan Elffers 4 5.6
Jan Kuipers 8 5.9
Jan Stoklasa 1 6.6
Jason Pham 1 4.2
Javier Gómez Serrano 3 5.6
Jean-Christophe Filliâtre 1 4.4
Jean Niklas L'orange 14 4.9
Jeff Kinne 1 1.4
Jennifer Lhoták 1 6.2
Jennifer Shimada 1 4.5
Jeroen Bransen 7 3.8
Jeroen de Jong 1 5.9
Jesper Öqvist 4 6.0
Jim Grimmett 10 4.5
Jimmy Mårdell 17 5.3
Jingbo Shang 8 5.3
Johan Sannemo 72 5.6
John Bonomo 46 4.7
John Cigas 4 1.9
John Dethridge 4 5.7
Jon Ander Gómez 3 5.3
Jon Marius Venstad 10 4.8
Joran van Apeldoorn 1 5.2
Joris van Rantwijk 5 5.3
Josee Tasse 1 4.3
Josef Cibulka 1 6.6
José Paulo Leal 1 3.9
Joseph Swernofsky 3 4.2
Joshua Moerman 3 6.5
Joshua T. Guerin 7 3.0
Josse van Dobben de Bruyn 7 4.3
Jozef Šiška 1 3.5
Julian Baldus 1 6.4
Julian Dörfler 1 6.4
Julian Neeleman 1 8.9
Junbin Teng 1 7.6
Justin Park 1 2.6
Kai Chen 3 4.8
Karl Johan Sande Heimark 9 4.8
Kathleen Ericson 7 3.0
Kent Williams-King 4 6.4
Kristoffer Arnsfelt Hansen 1 6.1
Kristof Unterweger 1 4.8
Kuan Wei Heng 1 4.9
Kyle See 2 4.4
Lap Chi Lau 1 6.6
Larry D. Pyeatt 2 5.0
Larry Pyeatt 2 3.7
Lars Åström 2 2.4
Lau Lap Chi 1 6.0
Law Wai Hon 2 3.8
Lech Duraj 10 6.0
Lee Chun Yin 1 8.8
Leo Osvald 2 5.2
Leszek Horwath 1 7.7
Leung Kai Man 1 8.0
Lewin Gan 3 5.9
Liam Keliher 17 4.4
Li Cheuk Ting 2 5.6
Louis Jachiet 1 8.2
Lucas Wood 1 3.5
Luis Hernández Corbato 1 8.2
Luka Kalinovčić 5 5.3
Lukas Polacek 1 5.6
Lukáš Poláček 49 5.5
Łukasz Matylla 1 7.9
Maciej Liskiewicz 1 6.5
Magne Vikjord 3 6.0
Magnus Øian 2 5.0
Mahbubul Hasan 2 6.1
Maj Stenmark 2 2.5
Malcolm Sharpe 11 6.3
Måns Magnusson 9 4.6
Manuel Abellanas 1 7.6
Manuel Freire 1 2.9
Marc Furon 1 6.2
Marcus Isaksson 1 5.3
Marc Vinyals 15 5.9
Margarida Mamede 4 4.6
Marin Tomić 9 5.2
Mario Nakazawa 1 2.0
Marius Andrei 1 6.5
Mark Gordon 1 7.7
Marko Berezovsky 6 4.8
Marko Ivanković 9 3.5
Mark Theng Kwang Hui 2 7.7
Markus Dregi 4 5.9
Markus Fanebust Dregi 1 5.4
Markus S. Dregi 4 6.4
Mårten Wiman 4 5.7
Martin Kačer 1 6.6
Martin Macko 1 3.1
Martin Tran 5 2.6
Mathijs de Weerdt 1 3.5
Matias Holte 1 3.2
Matija Milišić 1 7.0
Matthew Ng Zhen Rui 4 4.6
Matthias Bayerlein 1 4.6
Max Wilson 1 2.1
Mees de Vries 17 4.7
Micah Stairs 6 6.3
Michael Bradet-Legris 1 2.7
Michael C Slattery 1 6.8
Michael Goldwasser 7 4.8
Michael Zmuda 1 1.5
Michal Forišek 6 3.1
Michał Pilipczuk 5 4.5
Michał Sapalski 1 6.3
Miguel Araújo 6 5.7
Miguel Oliveira 6 6.3
Mikael Goldmann 17 5.3
Mike Domaratzki 3 5.8
Mike Zmuda 1 3.4
Ming-Yee Iu 1 5.8
Mislav Balunović 14 5.5
Mislav Bradač 3 6.6
Modan Han 6 4.2
Moritz Kobitzsch 3 5.5
Mykola Protsenko 1 3.3
Nalin Bhardwaj 1 7.1
Nathan Backman 4 3.9
Nathan Mytelka 1 6.1
Neha Kapur 1 1.4
Nguyen Dinh Quang Minh 9 6.3
Nguyen Tan Sy Nguyen 1 4.8
Nicholas Sharp 3 2.0
Nikola Dmitrović 5 1.6
Nikola Pintarić 1 1.4
Nils Grimsmo 4 4.2
Nils Gustafsson 21 5.4
Olav Røthe Bakken 7 5.8
Olivier Bourgeois 1 2.1
Ondřej Lhoták 39 5.3
Oskar Werkelin Ahlin 19 4.4
Owen Kaser 1 4.3
Øyvind Grotmol 8 6.3
Øyvind Haarberg 4 4.4
Paco Álvaro 1 7.1
Pål G. Drange 4 6.4
Pål Grønås Drange 6 4.7
Pär Söderhjelm 1 6.0
Paul Wild 4 5.4
Pavel Petrovic 1 6.0
Pawel Gawrychowski 2 8.0
Paweł Idziak 1 2.5
Paweł Komosa 1 7.0
Pedro Guerreiro 3 5.7
Pedro Ribeiro 1 6.1
Pedro Vasconcelos 4 4.7
Pehr Söderman 14 4.7
Peilin Zhong 2 6.3
Per Austrin 110 5.6
Peter Høyer 1 4.5
Peter Kluit 1 6.1
Peter Košinár 1 6.8
Peter Steele 3 7.6
Petr Mitrichev 1 6.7
Petter Elvevoll 2 3.8
Philip Wellnitz 1 6.4
Piotr Micek 1 6.7
Piotr Rudnicki 20 4.4
Piotr Zielinski 1 5.8
Prabhakar Ragde 2 5.4
Ragnar Groot Koerkamp 11 5.3
Ragnar Nevries 1 7.9
Ranald Lam Yun Shao 2 7.1
Raphaël Marinier 2 6.0
Raymond Kang Seng Ing 1 4.3
Raymond van Bommel 7 4.8
Richard Peng 5 5.1
R. Marshall 2 3.0
Robert Hochberg 9 4.9
Robert McGorman 1 2.0
Robert Pilgrim 1 2.6
Robin Christopher Yu 44 6.5
Robin Lee 19 5.6
Roger Henriksson 1 4.2
Rudy van Vliet 1 5.4
Rujia Liu 5 4.9
Ryan Henning 2 5.3
Ryan Marshall 5 3.8
Saketh Are 1 5.5
Samuel Tardieu 1 7.3
Sander Alewijnse 1 8.8
Scott McGowan 1 4.8
Sean McCulloch 3 6.4
Sérgio Crisóstomo 2 4.4
Serikzhan Kazi 1 5.7
Serikzhan S. Kazi 1 4.6
Shafaet Ashraf 1 9.2
Shaheed Ebrahim 1 3.1
Shahriar Manzoor 1 5.9
Shiplu Hawlader 1 5.1
Sidhant Bansal 2 3.2
Sidney Cadot 1 3.5
Silviu Maniu 2 3.1
Simon Klein 1 5.6
Simon Lindholm 8 7.9
Sonny Chan 3 3.8
Spencer Pao 1 2.2
Stefan Büttcher 3 5.7
Stefan Kraus 1 3.2
Stefan Pszczolkowski 1 1.7
Stefan Toman 1 3.1
Stein Norheim 7 6.2
Steven Halim 23 4.9
Steven Wijaya 1 6.9
Steven Zeil 11 5.3
Stjepan Požgaj 1 4.8
Stuart Hansen 1 3.8
Suhendry Effendy 1 1.4
Svetoslav Tzvetkov 1 8.1
Swen Gaudl 1 6.9
Synopsys 1 6.0
Syx Pek 7 5.5
Tan Jun An 2 3.5
Thierry Lavoie 1 6.0
Thijs van Ommen 1 7.4
Thomas Beuman 4 7.3
Thomas Lidbetter 6 6.8
Thomasz Idziaszek 1 4.6
Thore Husfeldt 7 5.3
Timon Knigge 11 5.0
Tobias Werth 6 3.9
Tómas Ken Magnússon 3 3.7
Tomas Rokicki 1 5.0
Tom Fuller 1 2.9
Tommy Färnqvist 3 4.2
Tom Rokicki 1 3.2
Tom Verhoeff 1 3.0
Tonko Sabolčec 1 3.7
Tony Cai 12 4.5
Torbjørn Morland 21 4.9
Torstein Strømme 15 4.8
Troy Vasiga 3 3.9
Truls A. Björklund 1 2.3
Truls Amundsen Bjørklund 1 1.3
Tung Kam Chuen 10 6.3
Ulf Lundström 22 4.6
Ulle Endriss 1 4.3
University of Dallas 1 5.4
Unnar Freyr Erlendsson 1 1.8
Vaibhav Tulsyan 1 3.9
Vegard Sjonfjell 2 4.2
Victor Loh Bo Huai 1 7.6
Vladimir Valyukh 3 6.2
Vlado Keselj 1 7.4
Volodymyr Lyubinets 5 5.4
Walter Guttmann 1 6.6
Wenda Qiu 3 5.2
Wenli Looi 5 3.4
William Fiset 4 4.2
William Gan Wei Liang 2 7.4
Wing-Kin Sung 1 6.8
Xiaomin Chen 5 5.2
Xiaoyuan Suo 2 3.9
Xiayuan Suo 1 1.6
Yingtao Tian 3 5.8
Ylvis 1 2.2
Yuen Chak Fai 2 5.0
Yujie An 1 6.5
Zachary Friggstad 22 4.3
Zachary Geier 1 4.8
Zack Butler 4 5.3
Ziyi Tang 2 3.6
Zvonimir Medić 1 6.4