Problem Authors

Problem author Problems Average Difficulty
Aarav Singh 2 4.4
Aaron Deever 1 5.4
A.Augusto de Sousa 1 6.9
Abel Molina 1 4.5
Abe Wits 4 5.9
Adam Polak 6 5.7
Adrian Kügel 3 4.8
Adrian Satja Kurdija 18 4.6
Akshay Goel 1 4.1
Alexander Dietsch 4 4.9
Alexander Rass 4 6.3
Alexander Scheel 2 3.3
Alexander Wei 1 6.0
Alex Brodsky 1 6.8
Alex Li 4 6.2
Alex ten Brink 1 5.3
Amar Topalovic 2 7.2
Ana Paula Tomás 3 4.5
Andreas Björklund 21 5.4
Andreas Lundblad 3 7.3
Andreas Schuh 1 1.7
André Susano Pinto 2 8.1
Andrew Ahnn 1 2.4
Andrew Baas 1 4.7
Andrew Gove 1 3.7
Andrew Harrington 7 3.5
Andrew Nuxoll 1 5.2
Andrew Stankevich 1 7.9
Andrew Warner 1 6.2
Andriy Katkov 2 4.1
Andy Harrington 2 6.8
Andy Nguyen 2 8.5
Ante Derek 1 6.5
Anthony Han 4 5.6
Anton Grbin 2 7.4
Antonio Jurić 6 4.8
Antti Laaksonen 6 5.2
Ariana Herbst 2 5.4
Arkadiusz Pawlik 4 7.5
Arnav Sastry 8 4.0
Arne Alex 3 5.8
Arthur van Goethem 2 3.9
Arup Guha 3 5.2
Atli Fannar Franklín 6 4.8
Babak Behsaz 6 4.4
Bartholomew Furrow 3 6.3
Bartosz Walczak 2 5.7
Ben Bradshaw 1 4.8
Benjamin Reidys 1 4.9
Ben Zhang 1 6.6
Bergur Snorrason 6 4.8
Birk Tjelmeland 2 4.6
Bjarki Ágúst Guðmundsson 15 4.7
Björn Hegerfors 1 7.4
Boas Kluiving 1 6.6
Boaz Pat-El 4 4.5
Bob Pilgrim 2 3.8
Bob Roos 9 5.0
Børge Nordli 1 7.2
Bowen Yu 32 6.0
Bo Zhou 2 9.0
Brandon Fuller 13 4.3
Branimir Filipović 3 3.5
Brian Chen 1 2.9
Bruce Elenbogen 1 5.1
Bruce S. Elenbogen 1 2.4
Bruno Rahle 7 3.7
Bryce Sandlund 3 4.3
Chad Mourning 1 2.9
Chan Pak Hay 1 4.2
Chan Pak Hei 1 6.9
Charles L. A. Clarke 1 3.8
Chengyu Lin 3 6.6
Chidambaram Annamalai 1 7.3
Chin Zhan Xiong 1 5.8
Christian Hundt 1 7.9
Christian Jonassen 1 1.5
Christian Ledig 1 4.3
Christian Neverdal Jonassen 2 2.1
Christian Renner 2 4.6
Christoph Dürr 2 5.0
Christopher Raphael 1 5.8
Clark Cucinell 1 2.7
Cosmin Negruseri 4 6.0
Damian Straszak 2 6.0
Dan Folescu 1 1.7
Daniel Brinkers 2 2.4
Daniel Espling 3 5.7
Daniel Gil 1 1.8
Daniel Lokshtanov 4 6.7
Daniel Moyer 1 2.4
Daniel Paleka 1 7.6
Daniel Robbins 1 6.0
Daniel Stefankovic 5 7.7
Dante Bencivenga 2 5.4
Darcy Best 7 3.8
Darko Aleksic 7 4.0
Dave Hotchkiss 2 1.9
David Arthur 1 7.3
David García Soriano 2 5.9
David Poplawski 1 5.5
David Sturgill 74 3.9
David van Brackle 1 6.5
Deon Nicholas 5 4.6
Derek Kisman 3 7.4
Dillon Cutaiar 1 2.0
Domagoj Bradač 1 6.1
Domagoj Ćevid 2 7.2
Dominik Gleich 17 5.6
Don Reble 3 4.1
Ed Skochinski 1 8.1
Eduard Kalinicenko 1 7.6
Egor Dranischnikow 3 4.3
Eirik Reksten 1 7.8
Emilio Vivancos 1 4.5
Emma Enström 3 2.9
Enrique Martín Martín 1 8.1
Eric Hervet 1 2.0
Eric Shade 1 4.0
Erik Aas 3 7.5
Erik Amirell Eklöf 1 8.6
Etienne Vouga 10 4.6
Felix Halim 1 2.3
Filiberto Fuentes 1 6.0
Filip Barl 7 4.1
Florin Ghesu 1 8.3
Francisco Criado 1 4.7
François Aubry 2 4.9
Frane Kurtović 1 6.4
Fredrik Niemelä 2 5.0
Fredrik Svensson 4 6.2
Gerben Stavenga 3 5.5
Gilbert Lee 1 5.6
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 7.7
Gu Jin 3 6.7
Gunnar Kreitz 11 4.9
Gustav Matula 1 3.2
Hans Wennborg 1 5.3
Haochen Chen 4 6.0
Harrison Fang 2 4.4
Harry Smit 6 5.2
Hélène Verhaeghe 1 2.4
Henrik Eriksson 4 3.1
Henry Wang 1 2.7
Hon Man Hin 3 6.1
Howard Cheng 25 3.9
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 5.8
Isaac Arvestad 4 4.1
Isaac Lee 2 6.4
Ivan Katanić 5 6.6
Ivan Paljak 7 4.9
Ivona Bezakova 7 6.6
Ivor Page 3 4.2
Jaap Eldering 5 6.0
Jack Rosenthal 3 1.9
Jacob Merizia 1 4.5
Jacob Plachta 3 4.4
Jacques-Henri Jourdan 1 6.4
Jaehyun Park 1 6.3
Jakob Krainz 3 5.2
Jakub Pachocki 2 7.6
Jakub Závodný 1 7.7
Jalal Almhana 1 2.0
James Feher 5 1.9
James Stanley 1 2.8
Jan Elffers 4 5.6
Jan Kuipers 8 5.5
Jan Stoklasa 1 6.5
Jason Pham 1 4.1
Javier Gómez Serrano 3 5.6
Jean-Christophe Filliâtre 1 4.5
Jean Niklas L'orange 14 4.9
Jeff Kinne 1 1.4
Jennifer Lhoták 1 6.2
Jennifer Shimada 1 4.7
Jeroen Bransen 7 3.8
Jeroen de Jong 1 5.9
Jesper Öqvist 4 6.0
Jim Grimmett 10 4.3
Jimmy Mårdell 17 5.3
Jingbo Shang 8 5.2
Johan Sannemo 72 5.6
John Bonomo 46 4.7
John Cigas 4 1.8
John Dethridge 4 5.7
Jon Ander Gómez 3 5.1
Jon Marius Venstad 10 4.8
Joran van Apeldoorn 1 5.2
Joris van Rantwijk 5 5.3
Josee Tasse 1 4.2
Josef Cibulka 1 6.5
José Paulo Leal 1 3.8
Joseph Swernofsky 3 4.1
Joshua Moerman 3 6.6
Joshua T. Guerin 7 3.0
Josse van Dobben de Bruyn 7 4.3
Jozef Šiška 1 3.5
Julian Baldus 1 6.3
Julian Dörfler 1 6.3
Julian Neeleman 1 8.9
Junbin Teng 1 7.6
Justin Park 1 2.6
Kai Chen 3 5.2
Karl Johan Sande Heimark 9 4.8
Kathleen Ericson 7 3.0
Kent Williams-King 4 6.5
Kristoffer Arnsfelt Hansen 1 6.1
Kristof Unterweger 1 4.8
Kuan Wei Heng 1 4.9
Kyle See 2 4.7
Lap Chi Lau 1 6.5
Larry D. Pyeatt 2 4.9
Larry Pyeatt 2 3.7
Lars Åström 2 2.2
Lau Lap Chi 1 6.1
Law Wai Hon 2 3.9
Lech Duraj 10 6.1
Lee Chun Yin 1 8.7
Leo Osvald 2 5.2
Leszek Horwath 1 7.5
Leung Kai Man 1 8.0
Lewin Gan 3 5.9
Liam Keliher 17 4.3
Li Cheuk Ting 2 5.6
Louis Jachiet 1 7.5
Lucas Wood 1 3.6
Luis Hernández Corbato 1 8.3
Luka Kalinovčić 5 5.4
Lukas Polacek 1 5.7
Lukáš Poláček 49 5.5
Łukasz Matylla 1 8.0
Maciej Liskiewicz 1 6.5
Magne Vikjord 3 6.0
Magnus Øian 2 5.2
Mahbubul Hasan 2 6.3
Maj Stenmark 2 2.8
Malcolm Sharpe 11 6.3
Måns Magnusson 9 4.6
Manuel Abellanas 1 7.8
Manuel Freire 1 3.0
Marc Furon 1 6.3
Marcus Isaksson 1 5.3
Marc Vinyals 15 5.9
Margarida Mamede 4 4.6
Marin Tomić 9 5.3
Mario Nakazawa 1 2.0
Marius Andrei 1 6.5
Mark Gordon 1 7.7
Marko Berezovsky 6 4.9
Marko Ivanković 9 3.6
Mark Theng Kwang Hui 2 7.7
Markus Dregi 4 5.9
Markus Fanebust Dregi 1 5.3
Markus S. Dregi 4 6.4
Mårten Wiman 4 5.7
Martin Kačer 1 6.5
Martin Macko 1 3.1
Martin Tran 5 2.8
Mathijs de Weerdt 1 3.5
Matias Holte 1 3.1
Matija Milišić 1 7.0
Matthew Ng Zhen Rui 4 5.6
Matthias Bayerlein 1 4.6
Max Wilson 1 2.1
Mees de Vries 17 4.5
Micah Stairs 6 6.2
Michael Bradet-Legris 1 2.8
Michael C Slattery 1 6.5
Michael Goldwasser 7 4.8
Michael Zmuda 1 1.6
Michal Forišek 6 3.2
Michał Pilipczuk 5 4.3
Michał Sapalski 1 6.4
Miguel Araújo 6 5.9
Miguel Oliveira 6 6.2
Mikael Goldmann 17 5.3
Mike Domaratzki 3 5.7
Mike Zmuda 1 3.4
Mislav Balunović 14 5.5
Mislav Bradač 3 7.1
Modan Han 6 4.1
Moritz Kobitzsch 3 5.6
Mykola Protsenko 1 3.3
Nalin Bhardwaj 1 7.0
Nathan Backman 4 3.9
Nathan Mytelka 1 6.3
Neha Kapur 1 1.4
Nguyen Dinh Quang Minh 9 5.8
Nguyen Tan Sy Nguyen 1 4.6
Nicholas Sharp 3 2.1
Nikola Dmitrović 5 1.6
Nikola Pintarić 1 1.4
Nils Grimsmo 4 4.2
Nils Gustafsson 21 5.4
Olav Røthe Bakken 7 5.9
Olivier Bourgeois 1 2.1
Ondřej Lhoták 37 5.3
Oskar Werkelin Ahlin 19 4.5
Owen Kaser 1 4.2
Øyvind Grotmol 8 6.4
Øyvind Haarberg 4 4.4
Paco Álvaro 1 7.4
Pål G. Drange 4 6.4
Pål Grønås Drange 6 4.7
Pär Söderhjelm 1 5.6
Paul Wild 4 5.5
Pavel Petrovic 1 6.0
Pawel Gawrychowski 2 8.0
Paweł Idziak 1 2.6
Paweł Komosa 1 7.0
Pedro Guerreiro 3 5.6
Pedro Ribeiro 1 5.7
Pedro Vasconcelos 4 4.7
Pehr Söderman 14 4.7
Peilin Zhong 2 6.4
Per Austrin 110 5.6
Peter Høyer 1 4.6
Peter Kluit 1 6.1
Peter Košinár 1 7.2
Peter Steele 3 7.7
Petr Mitrichev 1 6.7
Petter Elvevoll 2 3.9
Philip Wellnitz 1 6.3
Piotr Micek 1 6.7
Piotr Rudnicki 20 4.3
Piotr Zielinski 1 5.8
Prabhakar Ragde 2 5.4
Ragnar Groot Koerkamp 11 5.0
Ragnar Nevries 1 7.9
Ranald Lam Yun Shao 2 7.2
Raphaël Marinier 2 6.2
Raymond Kang Seng Ing 1 4.0
Raymond van Bommel 7 4.9
Richard Peng 5 5.0
R. Marshall 2 2.9
Robert Hochberg 9 4.9
Robert McGorman 1 2.0
Robert Pilgrim 1 2.7
Robin Christopher Yu 44 6.2
Robin Lee 19 5.6
Roger Henriksson 1 4.3
Rudy van Vliet 1 5.8
Rujia Liu 5 4.9
Ryan Henning 2 5.4
Ryan Marshall 5 3.7
Saketh Are 1 5.4
Samuel Tardieu 1 7.7
Sander Alewijnse 1 8.8
Scott McGowan 1 4.5
Sean McCulloch 3 6.4
Sérgio Crisóstomo 2 4.3
Serikzhan Kazi 1 5.7
Serikzhan S. Kazi 1 4.7
Shafaet Ashraf 1 9.2
Shaheed Ebrahim 1 3.1
Shahriar Manzoor 1 5.9
Shiplu Hawlader 1 5.2
Sidhant Bansal 2 3.6
Sidney Cadot 1 3.5
Silviu Maniu 2 2.9
Simon Klein 1 5.8
Simon Lindholm 8 7.8
Sonny Chan 3 4.8
Spencer Pao 1 2.2
Stefan Büttcher 3 5.7
Stefan Kraus 1 3.1
Stefan Pszczolkowski 1 1.8
Stefan Toman 1 3.6
Stein Norheim 7 6.2
Steven Halim 23 4.9
Steven Wijaya 1 6.6
Steven Zeil 11 5.5
Stjepan Požgaj 1 4.9
Stuart Hansen 1 3.8
Suhendry Effendy 1 1.4
Svetoslav Tzvetkov 1 8.1
Swen Gaudl 1 7.3
Synopsys 1 5.4
Syx Pek 7 5.8
Tan Jun An 2 3.9
Thierry Lavoie 1 5.4
Thijs van Ommen 1 7.5
Thomas Beuman 4 7.3
Thomas Lidbetter 6 6.8
Thomasz Idziaszek 1 4.6
Thore Husfeldt 7 5.4
Timon Knigge 11 5.0
Tobias Werth 6 3.9
Tómas Ken Magnússon 3 3.8
Tomas Rokicki 1 5.1
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 3.8
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 1.9
Vaibhav Tulsyan 1 4.1
Vegard Sjonfjell 2 4.2
Victor Loh Bo Huai 1 7.5
Vladimir Valyukh 3 6.3
Vlado Keselj 1 7.8
Volodymyr Lyubinets 5 5.4
Walter Guttmann 1 6.6
Wenda Qiu 3 5.1
Wenli Looi 5 3.4
William Fiset 4 3.9
William Gan Wei Liang 2 7.3
Wing-Kin Sung 1 6.8
Xiaomin Chen 5 5.2
Xiaoyuan Suo 2 3.9
Xiayuan Suo 1 1.7
Yingtao Tian 3 5.9
Ylvis 1 2.0
Yuen Chak Fai 2 4.3
Yujie An 1 6.4
Zachary Friggstad 22 4.4
Zachary Geier 1 4.9
Zack Butler 4 5.3
Ziyi Tang 2 3.6
Zvonimir Medić 1 6.5