Problem Authors

Problem author Problems Average Difficulty
Aarav Singh 2 4.6
Aaron Deever 1 6.6
A.Augusto de Sousa 1 5.8
Abel Molina 1 4.9
Abe Wits 4 5.8
Adam Polak 6 5.3
Adrian Kügel 3 5.0
Adrian Satja Kurdija 18 4.9
Akshay Goel 1 4.0
Alexander Dietsch 4 4.6
Alexander Rass 4 6.4
Alexander Scheel 2 3.2
Alexander Wei 1 6.0
Alex Brodsky 1 7.1
Alex Li 4 5.4
Alex ten Brink 1 6.4
Amar Topalovic 2 6.9
Ana Paula Tomás 3 5.0
Andreas Björklund 20 5.5
Andreas Lundblad 3 7.1
Andreas Schuh 1 1.7
André Susano Pinto 2 7.3
Andrew Ahnn 1 2.6
Andrew Baas 1 5.7
Andrew Gove 1 3.5
Andrew Harrington 7 3.6
Andrew Nuxoll 1 5.7
Andrew Stankevich 1 7.9
Andrew Warner 1 5.0
Andriy Katkov 2 4.3
Andy Harrington 2 7.3
Andy Nguyen 2 8.6
Ante Derek 1 7.2
Anthony Han 4 5.3
Anton Grbin 2 7.2
Antonio Jurić 6 4.8
Antti Laaksonen 6 5.2
Ariana Herbst 2 6.0
Arkadiusz Pawlik 4 7.3
Arnav Sastry 8 4.3
Arne Alex 3 5.7
Arthur van Goethem 2 3.2
Arup Guha 3 5.2
Atli Fannar Franklín 6 4.8
Babak Behsaz 6 4.3
Bartholomew Furrow 3 5.9
Bartosz Walczak 2 6.0
Ben Bradshaw 1 5.5
Benjamin Reidys 1 4.9
Ben Zhang 1 6.9
Bergur Snorrason 6 4.8
Birk Tjelmeland 2 4.5
Bjarki Ágúst Guðmundsson 15 4.9
Björn Hegerfors 1 7.5
Boas Kluiving 1 6.8
Boaz Pat-El 4 5.0
Bob Pilgrim 2 3.9
Bob Roos 9 5.4
Børge Nordli 1 5.5
Bowen Yu 27 5.8
Bo Zhou 1 9.1
Brandon Fuller 13 4.5
Branimir Filipović 3 3.6
Brian Chen 1 3.5
Bruce Elenbogen 1 5.4
Bruce S. Elenbogen 1 2.6
Bruno Rahle 7 3.7
Bryce Sandlund 3 4.7
Chad Mourning 1 3.0
Chan Pak Hay 1 4.1
Chan Pak Hei 1 6.6
Charles L. A. Clarke 1 3.6
Chengyu Lin 2 6.4
Chidambaram Annamalai 1 7.4
Chin Zhan Xiong 1 5.3
Christian Hundt 1 8.3
Christian Jonassen 1 1.6
Christian Ledig 1 4.3
Christian Neverdal Jonassen 2 2.2
Christian Renner 2 4.5
Christoph Dürr 2 4.7
Christopher Raphael 1 5.8
Clark Cucinell 1 2.8
Cosmin Negruseri 4 6.1
Damian Straszak 2 5.9
Dan Folescu 1 1.8
Daniel Brinkers 2 2.3
Daniel Espling 3 5.9
Daniel Gil 1 1.8
Daniel Lokshtanov 4 6.4
Daniel Moyer 1 2.3
Daniel Paleka 1 7.8
Daniel Robbins 1 6.2
Daniel Stefankovic 5 7.6
Darcy Best 7 3.7
Darko Aleksic 7 4.1
Dave Hotchkiss 2 1.8
David Arthur 1 6.6
David García Soriano 2 5.8
David Poplawski 1 5.2
David Sturgill 74 3.9
David van Brackle 1 6.3
Deon Nicholas 5 4.6
Derek Kisman 3 7.2
Dillon Cutaiar 1 2.1
Domagoj Bradač 1 6.5
Domagoj Ćevid 2 6.5
Dominik Gleich 17 5.6
Don Reble 3 4.2
Ed Skochinski 1 7.9
Eduard Kalinicenko 1 7.5
Egor Dranischnikow 3 4.3
Eirik Reksten 1 7.8
Emilio Vivancos 1 4.9
Emma Enström 3 3.2
Enrique Martín Martín 1 8.6
Eric Hervet 1 2.0
Eric Shade 1 5.1
Erik Aas 3 7.5
Etienne Vouga 10 5.1
Felix Halim 1 2.4
Filiberto Fuentes 1 5.3
Filip Barl 7 4.1
Florin Ghesu 1 7.0
Francisco Criado 1 5.0
François Aubry 2 4.4
Frane Kurtović 1 6.0
Fredrik Niemelä 2 5.7
Fredrik Svensson 4 6.3
Gerben Stavenga 3 5.7
Gilbert Lee 1 6.1
Godmar Back 32 3.9
Goran Gašić 3 5.3
Goran Žužić 9 6.1
Gordon Cormack 1 6.1
Gordon V. Cormack 46 5.0
Graeme Kemkes 1 2.8
Graeme Zinck 1 4.2
Greg Hamerly 96 4.0
Gregor Behnke 6 4.5
Grzegorz Herman 3 6.9
Gu Jin 2 5.3
Gunnar Kreitz 10 4.8
Gustav Matula 1 3.3
Hans Wennborg 1 5.1
Haochen Chen 4 5.8
Harrison Fang 2 4.3
Harry Smit 6 4.9
Hélène Verhaeghe 1 2.4
Henrik Eriksson 4 2.9
Henry Wang 1 3.1
Hon Man Hin 3 6.6
Howard Cheng 25 4.1
Hubert Teo Hua Kian 3 6.8
Hung Chun Ho 1 8.7
Ian Munro 1 2.8
Igor Naverniouk 1 7.2
Ioana Ilena 1 5.3
Irina Kostitsyna 1 3.7
Irvan Jahja 8 5.9
Isaac Lee 1 6.7
Ivan Katanić 5 6.5
Ivan Paljak 7 4.9
Ivona Bezakova 7 6.6
Ivor Page 3 4.1
Jaap Eldering 5 6.1
Jack Rosenthal 3 1.8
Jacob Merizia 1 5.1
Jacob Plachta 3 5.2
Jacques-Henri Jourdan 1 7.2
Jaehyun Park 1 8.5
Jakob Krainz 3 5.7
Jakub Pachocki 2 7.3
Jakub Závodný 1 7.5
Jalal Almhana 1 2.0
James Feher 5 1.9
James Stanley 1 2.7
Jan Elffers 4 5.2
Jan Kuipers 7 5.7
Jan Stoklasa 1 6.9
Jason Pham 1 3.3
Javier Gómez Serrano 3 5.7
Jean-Christophe Filliâtre 1 4.5
Jean Niklas L'orange 14 5.0
Jeff Kinne 1 1.5
Jennifer Lhoták 1 6.8
Jennifer Shimada 1 6.0
Jeroen Bransen 7 3.8
Jeroen de Jong 1 5.7
Jesper Öqvist 3 7.5
Jim Grimmett 10 4.7
Jimmy Mårdell 17 5.5
Jingbo Shang 8 5.6
Johan Sannemo 66 5.7
John Bonomo 46 4.6
John Cigas 4 1.8
John Dethridge 4 5.9
Jon Ander Gómez 3 5.8
Jon Marius Venstad 10 4.6
Joran van Apeldoorn 1 4.9
Joris van Rantwijk 5 5.6
Josee Tasse 1 3.7
Josef Cibulka 1 6.9
José Paulo Leal 1 3.9
Joseph Swernofsky 2 5.3
Joshua Moerman 3 6.2
Joshua T. Guerin 7 3.0
Josse van Dobben de Bruyn 7 4.5
Jozef Šiška 1 3.3
Julian Baldus 1 6.2
Julian Dörfler 1 6.2
Julian Neeleman 1 8.5
Junbin Teng 1 7.3
Justin Park 1 2.5
Kai Chen 2 4.1
Karl Johan Sande Heimark 9 4.6
Kathleen Ericson 7 3.0
Kent Williams-King 4 6.1
Kristoffer Arnsfelt Hansen 1 5.4
Kristof Unterweger 1 4.7
Kyle See 2 3.9
Lap Chi Lau 1 7.7
Larry D. Pyeatt 2 6.8
Larry Pyeatt 2 3.7
Lau Lap Chi 1 5.8
Law Wai Hon 2 3.7
Lech Duraj 10 6.5
Lee Chun Yin 1 8.2
Leo Osvald 2 5.0
Leszek Horwath 1 6.2
Leung Kai Man 1 8.3
Lewin Gan 3 6.8
Liam Keliher 11 4.3
Li Cheuk Ting 2 6.8
Louis Jachiet 1 8.3
Lucas Wood 1 4.3
Luis Hernández Corbato 1 7.0
Luka Kalinovčić 5 4.5
Lukas Polacek 1 4.9
Lukáš Poláček 49 5.5
Łukasz Matylla 1 8.7
Maciej Liskiewicz 1 6.7
Magne Vikjord 3 6.3
Magnus Øian 2 5.2
Mahbubul Hasan 2 5.8
Malcolm Sharpe 11 5.9
Måns Magnusson 7 5.1
Manuel Abellanas 1 7.7
Manuel Freire 1 2.7
Marc Furon 1 6.2
Marcus Isaksson 1 5.6
Marc Vinyals 15 6.0
Margarida Mamede 4 5.0
Marin Tomić 9 5.2
Mario Nakazawa 1 2.1
Marius Andrei 1 6.4
Mark Gordon 1 7.7
Marko Berezovsky 6 5.0
Marko Ivanković 9 3.5
Mark Theng Kwang Hui 2 7.7
Markus Dregi 4 6.0
Markus Fanebust Dregi 1 5.6
Markus S. Dregi 4 6.6
Mårten Wiman 4 6.3
Martin Kačer 1 6.9
Martin Macko 1 3.0
Mathijs de Weerdt 1 4.3
Matias Holte 1 3.3
Matija Milišić 1 7.0
Matthias Bayerlein 1 4.3
Max Wilson 1 2.1
Mees de Vries 17 4.6
Micah Stairs 5 5.9
Michael Bradet-Legris 1 4.4
Michael C Slattery 1 6.7
Michael Goldwasser 7 5.0
Michael Zmuda 1 1.5
Michal Forišek 6 3.3
Michał Pilipczuk 5 4.7
Michał Sapalski 1 6.3
Miguel Araújo 6 5.8
Miguel Oliveira 6 6.3
Mikael Goldmann 17 5.5
Mike Domaratzki 3 5.5
Mike Zmuda 1 3.5
Mislav Balunović 14 5.3
Mislav Bradač 3 6.8
Modan Han 6 4.1
Moritz Kobitzsch 3 5.6
Mykola Protsenko 1 3.4
Nalin Bhardwaj 1 7.4
Nathan Backman 4 4.0
Nathan Mytelka 1 6.4
Neha Kapur 1 1.5
Nguyen Tan Sy Nguyen 1 4.3
Nicholas Sharp 3 2.2
Nikola Dmitrović 5 1.5
Nikola Pintarić 1 1.3
Nils Grimsmo 4 4.3
Nils Gustafsson 8 5.6
Olav Røthe Bakken 7 5.6
Olivier Bourgeois 1 2.2
Ondřej Lhoták 36 5.4
Oskar Werkelin Ahlin 19 4.4
Owen Kaser 1 3.7
Øyvind Grotmol 8 6.1
Øyvind Haarberg 4 4.3
Paco Álvaro 1 7.3
Pål G. Drange 4 6.6
Pål Grønås Drange 6 4.9
Pär Söderhjelm 1 6.7
Paul Wild 4 5.3
Pavel Petrovic 1 6.0
Pawel Gawrychowski 2 7.5
Paweł Idziak 1 2.6
Paweł Komosa 1 7.0
Pedro Guerreiro 3 4.7
Pedro Ribeiro 1 4.4
Pedro Vasconcelos 4 4.8
Pehr Söderman 14 4.7
Peilin Zhong 1 3.8
Per Austrin 106 5.6
Peter Høyer 1 4.7
Peter Kluit 1 5.1
Peter Košinár 1 7.5
Peter Steele 3 7.3
Petr Mitrichev 1 6.6
Petter Elvevoll 2 3.6
Philip Wellnitz 1 6.2
Piotr Micek 1 7.2
Piotr Rudnicki 20 4.3
Piotr Zielinski 1 5.8
Prabhakar Ragde 2 4.9
Ragnar Groot Koerkamp 11 4.9
Ragnar Nevries 1 8.3
Ranald Lam Yun Shao 1 5.2
Raphaël Marinier 2 5.7
Raymond Kang Seng Ing 1 4.0
Raymond van Bommel 7 5.0
Richard Peng 5 5.2
R. Marshall 2 2.9
Robert Hochberg 9 4.9
Robert McGorman 1 2.0
Robert Pilgrim 1 2.8
Robin Christopher Yu 18 6.7
Robin Lee 19 5.6
Roger Henriksson 1 4.4
Rudy van Vliet 1 5.9
Rujia Liu 5 5.1
Ryan Henning 2 5.1
Ryan Marshall 5 3.8
Samuel Tardieu 1 6.3
Sander Alewijnse 1 8.6
Scott McGowan 1 4.2
Sean McCulloch 3 6.6
Sérgio Crisóstomo 2 3.4
Serikzhan Kazi 1 4.6
Serikzhan S. Kazi 1 5.0
Shafaet Ashraf 1 9.3
Shaheed Ebrahim 1 3.1
Shahriar Manzoor 1 4.7
Shiplu Hawlader 1 5.4
Sidhant Bansal 2 3.5
Sidney Cadot 1 4.3
Silviu Maniu 2 3.2
Simon Klein 1 5.7
Simon Lindholm 6 8.3
Sonny Chan 2 4.4
Spencer Pao 1 1.8
Stefan Büttcher 3 5.4
Stefan Kraus 1 3.0
Stefan Pszczolkowski 1 1.8
Stefan Toman 1 3.6
Stein Norheim 7 6.1
Steven Halim 12 4.2
Steven Zeil 11 5.6
Stjepan Požgaj 1 4.7
Stuart Hansen 1 3.8
Suhendry Effendy 1 1.5
Svetoslav Tzvetkov 1 7.9
Swen Gaudl 1 7.4
Syx Pek 7 5.8
Tan Jun An 2 3.3
Thijs van Ommen 1 6.9
Thomas Beuman 4 7.0
Thomas Lidbetter 4 6.8
Thomasz Idziaszek 1 5.0
Thore Husfeldt 6 5.4
Timon Knigge 11 5.0
Tobias Werth 6 3.9
Tómas Ken Magnússon 3 4.0
Tomas Rokicki 1 7.8
Tom Fuller 1 2.9
Tommy Färnqvist 3 4.4
Tom Rokicki 1 3.3
Tom Verhoeff 1 3.4
Tonko Sabolčec 1 3.8
Tony Cai 12 4.6
Torbjørn Morland 21 4.8
Torstein Strømme 15 4.5
Troy Vasiga 3 4.0
Truls A. Björklund 1 2.3
Truls Amundsen Bjørklund 1 1.3
Tung Kam Chuen 10 6.7
Ulf Lundström 22 4.6
Ulle Endriss 1 4.5
University of Dallas 1 5.3
Unnar Freyr Erlendsson 1 2.0
Vaibhav Tulsyan 1 4.5
Vegard Sjonfjell 2 4.2
Victor Loh Bo Huai 1 7.5
Vladimir Valyukh 3 6.4
Vlado Keselj 1 7.2
Volodymyr Lyubinets 5 5.7
Walter Guttmann 1 6.2
Wenda Qiu 3 4.4
Wenli Looi 5 3.5
William Fiset 3 5.5
William Gan Wei Liang 2 7.2
Wing-Kin Sung 1 6.7
Xiaomin Chen 5 5.2
Xiaoyuan Suo 2 4.0
Xiayuan Suo 1 1.7
Yingtao Tian 3 5.8
Ylvis 1 2.0
Yuen Chak Fai 2 4.9
Yujie An 1 6.6
Zachary Friggstad 22 4.6
Zachary Geier 1 3.8
Zack Butler 4 4.6
Ziyi Tang 2 3.8
Zvonimir Medić 1 6.0