Problem Authors

Problem author Problems Average Difficulty
Aarav Singh 1 1.4
A.Augusto de Sousa 1 5.8
Abel Molina 1 4.7
Abe Wits 4 5.3
Adam Polak 6 5.3
Adrian Kügel 3 4.5
Adrian Satja Kurdija 15 4.8
Akshay Goel 1 3.8
Alexander Dietsch 2 2.8
Alexander Rass 4 6.5
Alexander Scheel 2 3.2
Alexander Wei 1 5.9
Alex Brodsky 1 5.8
Alex Li 4 6.1
Alex ten Brink 1 6.8
Amar Topalovic 2 5.6
Ana Paula Tomás 3 5.2
Andreas Björklund 20 5.5
Andreas Lundblad 3 7.0
Andreas Schuh 1 1.7
André Susano Pinto 2 7.0
Andrew Gove 1 4.4
Andrew Harrington 7 3.7
Andrew Stankevich 1 8.0
Andrew Warner 1 6.7
Andriy Katkov 2 4.3
Andy Harrington 2 7.2
Andy Nguyen 2 7.9
Ante Derek 1 6.5
Anthony Han 4 5.0
Anton Grbin 2 6.3
Antonio Jurić 6 4.9
Antti Laaksonen 5 5.6
Ariana Herbst 1 5.3
Arkadiusz Pawlik 4 7.6
Arnav Sastry 5 3.7
Arne Alex 3 5.2
Arthur van Goethem 2 3.8
Arup Guha 3 5.6
Atli Fannar Franklín 6 5.0
Babak Behsaz 6 4.2
Bartholomew Furrow 3 5.7
Bartosz Walczak 2 5.9
Ben Bradshaw 1 6.2
Ben Zhang 1 5.0
Bergur Snorrason 6 5.0
Birk Tjelmeland 2 4.0
Bjarki Ágúst Guðmundsson 13 4.6
Björn Hegerfors 1 7.7
Boas Kluiving 1 6.1
Boaz Pat-El 4 4.7
Bob Pilgrim 2 4.1
Bob Roos 3 5.9
Børge Nordli 1 5.6
Bowen Yu 24 5.8
Bo Zhou 1 8.8
Brandon Fuller 9 4.7
Branimir Filipović 3 3.8
Brian Chen 1 3.6
Bruce Elenbogen 1 5.5
Bruce S. Elenbogen 1 3.0
Bruno Rahle 6 3.7
Bryce Sandlund 3 5.3
Chad Mourning 1 3.0
Chan Pak Hay 1 4.3
Chan Pak Hei 1 4.4
Charles L. A. Clarke 1 3.3
Chengyu Lin 2 7.3
Chidambaram Annamalai 1 7.6
Chin Zhan Xiong 1 6.6
Christian Hundt 1 7.7
Christian Jonassen 1 1.5
Christian Ledig 1 4.5
Christian Neverdal Jonassen 2 2.2
Christian Renner 2 4.7
Christoph Dürr 2 5.0
Christopher Raphael 1 5.9
Cosmin Negruseri 4 5.5
Damian Straszak 2 6.4
Daniel Brinkers 2 2.3
Daniel Espling 3 6.4
Daniel Gil 1 1.7
Daniel Lokshtanov 4 6.0
Daniel Moyer 1 2.2
Daniel Paleka 1 8.4
Daniel Robbins 1 7.7
Daniel Stefankovic 3 7.2
Darcy Best 5 3.8
Darko Aleksic 7 4.1
Dave Hotchkiss 2 1.9
David Arthur 1 6.6
David García Soriano 2 6.3
David Poplawski 1 5.6
David Sturgill 74 3.8
David van Brackle 1 6.5
Deon Nicholas 5 5.2
Derek Kisman 3 6.7
Domagoj Bradač 1 7.0
Domagoj Ćevid 2 6.5
Dominik Gleich 17 4.9
Don Reble 3 4.4
Ed Skochinski 1 8.4
Eduard Kalinicenko 1 6.8
Egor Dranischnikow 3 4.1
Eirik Reksten 1 7.7
Emilio Vivancos 1 5.1
Emma Enström 3 3.4
Enrique Martín Martín 1 8.9
Eric Hervet 1 2.0
Eric Shade 1 6.1
Erik Aas 3 7.5
Etienne Vouga 3 4.6
Felix Halim 1 2.1
Filip Barl 7 3.7
Florin Ghesu 1 6.4
Francisco Criado 1 4.8
François Aubry 2 3.5
Frane Kurtović 1 4.7
Fredrik Niemelä 2 5.1
Fredrik Svensson 4 6.7
Gerben Stavenga 3 5.5
Gilbert Lee 1 5.9
Godmar Back 27 3.5
Goran Gašić 3 4.9
Goran Žužić 9 6.3
Gordon Cormack 1 6.3
Gordon V. Cormack 46 4.9
Graeme Kemkes 1 2.8
Graeme Zinck 1 4.8
Greg Hamerly 92 4.0
Gregor Behnke 6 4.7
Grzegorz Herman 3 7.3
Gu Jin 2 5.9
Gunnar Kreitz 10 4.6
Gustav Matula 1 6.1
Hans Wennborg 1 5.1
Haochen Chen 4 6.0
Harrison Fang 2 3.3
Harry Smit 6 5.4
Hélène Verhaeghe 1 2.8
Henrik Eriksson 4 2.9
Henry Wang 1 3.6
Hon Man Hin 3 5.3
Howard Cheng 23 3.9
Hubert Teo Hua Kian 3 6.5
Hung Chun Ho 1 9.1
Ian Munro 1 2.8
Igor Naverniouk 1 6.5
Ioana Ilena 1 5.9
Irvan Jahja 8 5.5
Isaac Lee 1 7.1
Ivan Katanić 5 6.7
Ivan Paljak 7 5.2
Ivona Bezakova 4 5.8
Ivor Page 3 4.2
Jaap Eldering 5 5.9
Jack Rosenthal 3 1.9
Jacob Merizia 1 5.3
Jacob Plachta 3 5.4
Jacques-Henri Jourdan 1 6.5
Jakob Krainz 3 6.3
Jakub Pachocki 2 7.5
Jakub Závodný 1 7.6
Jalal Almhana 1 2.0
James Feher 5 2.0
James Stanley 1 2.6
Jan Elffers 4 5.4
Jan Kuipers 7 5.6
Jan Stoklasa 1 6.9
Jason Pham 1 3.6
Javier Gómez Serrano 3 5.8
Jean-Christophe Filliâtre 1 4.3
Jean Niklas L'orange 14 5.0
Jeff Kinne 1 1.5
Jennifer Lhoták 1 5.4
Jennifer Shimada 1 4.7
Jeroen Bransen 7 3.6
Jeroen de Jong 1 5.7
Jesper Öqvist 2 7.3
Jim Grimmett 10 4.7
Jimmy Mårdell 17 5.2
Johan Sannemo 66 5.8
John Bonomo 42 4.4
John Cigas 4 1.7
John Dethridge 4 5.4
Jon Ander Gómez 3 5.3
Jon Marius Venstad 10 4.8
Joran van Apeldoorn 1 3.7
Joris van Rantwijk 5 5.4
Josee Tasse 1 5.6
Josef Cibulka 1 6.9
José Paulo Leal 1 4.5
Joseph Swernofsky 2 5.5
Joshua Moerman 3 6.1
Joshua T. Guerin 5 3.0
Josse van Dobben de Bruyn 7 4.5
Jozef Šiška 1 3.2
Julian Baldus 1 6.8
Julian Dörfler 1 6.8
Julian Neeleman 1 8.3
Junbin Teng 1 7.2
Justin Park 1 2.5
Kai Chen 2 3.7
Karl Johan Sande Heimark 9 5.2
Kathleen Ericson 5 3.0
Kent Williams-King 4 6.8
Kristoffer Arnsfelt Hansen 1 5.6
Kristof Unterweger 1 4.2
Kyle See 2 5.1
Lap Chi Lau 1 6.8
Larry D. Pyeatt 2 6.3
Larry Pyeatt 2 3.9
Lau Lap Chi 1 6.2
Law Wai Hon 2 3.5
Lech Duraj 10 6.6
Lee Chun Yin 1 8.7
Leo Osvald 2 5.1
Leszek Horwath 1 7.4
Leung Kai Man 1 7.4
Lewin Gan 2 6.1
Liam Keliher 11 4.4
Li Cheuk Ting 2 6.4
Louis Jachiet 1 8.5
Lucas Wood 1 4.4
Luis Hernández Corbato 1 7.6
Luka Kalinovčić 4 5.5
Lukáš Poláček 49 5.5
Łukasz Matylla 1 9.0
Maciej Liskiewicz 1 6.5
Magne Vikjord 3 5.9
Magnus Øian 2 4.5
Mahbubul Hasan 2 6.0
Malcolm Sharpe 10 5.7
Måns Magnusson 7 5.5
Manuel Abellanas 1 7.2
Manuel Freire 1 2.5
Marc Furon 1 6.6
Marcus Isaksson 1 5.8
Marc Vinyals 15 6.1
Margarida Mamede 4 4.9
Marin Tomić 9 5.2
Mario Nakazawa 1 2.1
Marius Andrei 1 5.6
Mark Gordon 1 6.8
Marko Berezovsky 4 6.0
Marko Ivanković 9 3.5
Mark Theng Kwang Hui 2 7.8
Markus Dregi 2 7.1
Markus Fanebust Dregi 1 4.7
Markus S. Dregi 4 6.5
Mårten Wiman 4 6.5
Martin Kačer 1 6.9
Martin Macko 1 3.0
Mathijs de Weerdt 1 4.1
Matias Holte 1 3.3
Matija Milišić 1 6.8
Matthias Bayerlein 1 4.6
Max Wilson 1 2.1
Mees de Vries 17 5.2
Micah Stairs 5 6.0
Michael Bradet-Legris 1 4.4
Michael C Slattery 1 5.8
Michael Goldwasser 7 5.0
Michael Zmuda 1 1.5
Michal Forišek 6 3.4
Michał Pilipczuk 5 4.6
Michał Sapalski 1 6.4
Miguel Araújo 6 5.8
Miguel Oliveira 6 6.3
Mikael Goldmann 16 5.6
Mike Domaratzki 2 5.7
Mike Zmuda 1 3.8
Mislav Balunović 14 5.3
Mislav Bradač 3 6.0
Modan Han 6 4.2
Moritz Kobitzsch 3 5.0
Mykola Protsenko 1 3.5
Nalin Bhardwaj 1 7.0
Nathan Backman 4 4.0
Neha Kapur 1 1.4
Nguyen Tan Sy Nguyen 1 4.2
Nicholas Sharp 3 2.2
Nikola Dmitrović 5 1.5
Nikola Pintarić 1 1.3
Nils Grimsmo 4 4.3
Nils Gustafsson 3 3.1
Olav Røthe Bakken 3 4.3
Olivier Bourgeois 1 2.2
Ondřej Lhoták 35 5.1
Oskar Werkelin Ahlin 19 4.4
Owen Kaser 1 5.6
Øyvind Grotmol 8 5.9
Øyvind Haarberg 4 4.2
Paco Álvaro 1 7.2
Pål G. Drange 4 6.5
Pål Grønås Drange 5 4.9
Pär Söderhjelm 1 6.5
Paul Wild 3 5.1
Pavel Petrovic 1 6.1
Pawel Gawrychowski 2 7.2
Paweł Idziak 1 2.6
Paweł Komosa 1 7.9
Pedro Guerreiro 3 4.8
Pedro Ribeiro 1 4.9
Pedro Vasconcelos 4 4.4
Pehr Söderman 13 4.9
Peilin Zhong 1 5.0
Per Austrin 103 5.5
Peter Høyer 1 4.7
Peter Kluit 1 6.9
Peter Košinár 1 7.9
Peter Steele 3 7.0
Petr Mitrichev 1 6.8
Petter Elvevoll 2 4.2
Philip Wellnitz 1 6.8
Piotr Micek 1 6.8
Piotr Rudnicki 18 4.2
Piotr Zielinski 1 6.4
Prabhakar Ragde 2 5.4
Ragnar Groot Koerkamp 10 5.1
Ragnar Nevries 1 7.7
Ranald Lam Yun Shao 1 5.2
Raphaël Marinier 2 5.5
Raymond Kang Seng Ing 1 5.2
Raymond van Bommel 7 5.4
Richard Peng 5 5.4
R. Marshall 2 3.0
Robert Hochberg 9 4.9
Robert McGorman 1 2.0
Robert Pilgrim 1 2.8
Robin Christopher Yu 18 6.1
Robin Lee 18 5.4
Roger Henriksson 1 4.8
Rudy van Vliet 1 5.9
Rujia Liu 5 4.9
Ryan Henning 2 5.7
Ryan Marshall 5 3.8
Samuel Tardieu 1 7.4
Sander Alewijnse 1 8.6
Sean McCulloch 2 7.8
Sérgio Crisóstomo 2 3.9
Serikzhan Kazi 1 4.6
Serikzhan S. Kazi 1 5.2
Shafaet Ashraf 1 9.4
Shaheed Ebrahim 1 3.1
Shahriar Manzoor 1 5.1
Shiplu Hawlader 1 4.7
Sidhant Bansal 2 5.0
Sidney Cadot 1 4.1
Silviu Maniu 2 3.1
Simon Klein 1 5.5
Simon Lindholm 5 7.4
Sonny Chan 2 4.3
Spencer Pao 1 1.9
Stefan Büttcher 3 5.0
Stefan Kraus 1 3.0
Stefan Pszczolkowski 1 1.7
Stefan Toman 1 3.3
Stein Norheim 7 5.9
Steven Halim 12 3.8
Steven Zeil 11 6.1
Stjepan Požgaj 1 5.0
Stuart Hansen 1 3.9
Suhendry Effendy 1 1.5
Svetoslav Tzvetkov 1 8.4
Swen Gaudl 1 5.4
Syx Pek 7 5.1
Tan Jun An 2 5.9
Thijs van Ommen 1 7.6
Thomas Beuman 4 7.1
Thomas Lidbetter 4 6.8
Thomasz Idziaszek 1 4.5
Timon Knigge 11 5.0
Tobias Werth 6 3.9
Tómas Ken Magnússon 3 4.0
Tom Fuller 1 3.2
Tommy Färnqvist 3 4.4
Tom Rokicki 1 3.4
Tom Verhoeff 1 3.5
Tonko Sabolčec 1 3.8
Tony Cai 12 4.7
Torbjørn Morland 21 4.7
Torstein Strømme 7 4.4
Troy Vasiga 3 4.1
Truls A. Björklund 1 2.4
Truls Amundsen Bjørklund 1 1.3
Tung Kam Chuen 10 6.0
Ulf Lundström 21 4.6
Ulle Endriss 1 5.5
University of Dallas 1 5.5
Unnar Freyr Erlendsson 1 1.9
Vaibhav Tulsyan 1 4.5
Vegard Sjonfjell 2 4.9
Victor Loh Bo Huai 1 7.4
Vladimir Valyukh 3 6.8
Vlado Keselj 1 6.2
Volodymyr Lyubinets 5 5.7
Walter Guttmann 1 5.8
Wenli Looi 5 3.5
William Fiset 3 5.8
William Gan Wei Liang 2 7.0
Wing-Kin Sung 1 6.5
Xiaomin Chen 5 5.1
Xiaoyuan Suo 2 3.9
Xiayuan Suo 1 1.7
Yingtao Tian 3 5.3
Ylvis 1 2.0
Yuen Chak Fai 2 4.6
Yujie An 1 6.5
Zachary Friggstad 18 4.4
Ziyi Tang 2 4.0
Zvonimir Medić 1 6.3