Problem sources

Problem Source
Problems
Average Difficulty
E-402-STFO 2024 Module N84.6Medium
E-402-STFO 2024 Module P105.1Medium
E-402-STFO 2025 Module 345.5Hard
EGOI 2024 kvaltävling 253.8Medium
Ericsson Programming Challenge 201737.1Hard
EuroPython 201114.7Medium
European Girls' Olympiad in Informatics 202386Hard
European Girls' Olympiad in Informatics 202486.4Hard
European Girls' Olympiad in Informatics 202586.4Hard
Fall 2019 UT Invitational Programming Contest125.8Hard
Forritunarkeppni Framhaldsskólanna 2016192.9Medium
Forritunarkeppni Framhaldsskólanna 2017182.8Easy
Forritunarkeppni Framhaldsskólanna 2018203Medium
Forritunarkeppni Framhaldsskólanna 2019253.1Medium
Forritunarkeppni Framhaldsskólanna 2020323.1Medium
Forritunarkeppni Framhaldsskólanna 2021243Medium
Forritunarkeppni Framhaldsskólanna 2022303.4Medium
Forritunarkeppni Framhaldsskólanna 2023293.1Medium
Forritunarkeppni Framhaldsskólanna 2024343.7Medium
Forritunarkeppni Framhaldsskólanna 2025374Medium
Forritunarkeppni Háskólanna á Íslandi 2023104.8Medium
Forritunarkeppni Háskólanna á Íslandi 2024135.3Medium
Forritunarkeppni Háskólanna á Íslandi 2025125.2Medium
German Collegiate Programming Contest (GCPC) 2012114.9Medium
German Collegiate Programming Contest (GCPC) 2013115Medium
German Collegiate Programming Contest (GCPC) 2020135.5Hard
German Collegiate Programming Contest (GCPC) 2021145.7Hard
German Collegiate Programming Contest (GCPC) 2023135.4Medium
German Collegiate Programming Contest (GCPC) 2024134.9Medium
German Collegiate Programming Contest 2022135Medium
German Collegiate Programming Contest 2025115Medium
Google Code Jam 2008 Beta35.1Medium
Google Code Jam 2008 EMEA Semifinal25.8Hard
Google Code Jam 2008 Qualification Round34.5Medium
Google Code Jam 2008 Round 1A24.6Medium
Google Code Jam 2008 Round 1B44.9Medium
Google Code Jam 2008 Round 1C12.7Easy
Google Code Jam 2008 Round 235.3Medium
Google Code Jam 2008 Round 327.7Hard
Google Code Jam 2008 World Finals26.5Hard
Google Code Jam 2009 Qualification Round32.8Medium
Google Code Jam 2010 Online Competition Africa44.3Medium
Google Code Jam 2010 Qualification Round44.6Medium
Google Code Jam 2010 Qualification Round Africa11.7Easy
Google Code Jam 2011 Online Competition Africa and Arabia16.6Hard
Google Code Jam 2011 Qualification Round Africa and Arabia12.1Easy
Google Code Jam 201233.6Medium
Google Code Jam Practice Contest25.8Hard
Google Code Jam Practice Problems45.2Medium
Google Code Jam World Finals 201016.2Hard
Hendrix College Programming Contest 2024114.4Medium
Hendrix College Programming Contest 2025124Medium
HiQ Challenge 201763.8Medium
HiQ Challenge 201854.5Medium
Hong Kong Regional Contest 2016116.5Hard
Hong Kong Regional Contest 2016 Practice Session35.1Medium
Hong Kong Regional Online Preliminary 2016115.8Hard
ICPC 2012 North American Qualifier114.3Medium
ICPC NCNA Regionals 2025 202674.6Medium
ICPC North America Championship 2021136.7Hard
ICPC North America Regional Contests 2019-11-09184.6Medium
ICPC SG Preliminary Contest 2015105Medium
ICPC SG Preliminary Contest 2018105.1Medium
ICPC World Finals 2020156Hard
ICPC World Finals 2021126.4Hard
ICPC World Finals 202265.7Hard
ICPC World Finals 2022 and 202355.1Medium
ICPC World Finals 202366.5Hard
ICPC World Finals 2024126Hard
ICPC World Finals 2025124.8Medium
ICPC/SWERC 2025125.3Medium
IDI Open 2015104.4Medium
IDI Open 201694.1Medium
IDI Open 2017105Medium
IDI Open 2018125.2Medium
IDI Open 2019105.3Medium
IDI Open 2021125.6Hard
IDI Open 2022105.4Medium
IDI Open 2023105.7Hard
IDI Open 2025105.2Medium
IEEEXtreme 9.014.3Medium
INF102 UiB 201812.4Easy
INF237 Spring 201913.7Medium
IPSC 200025.5Medium
IPSC 200326.1Hard
IPSC 200412.4Easy
IPSC 200534.1Medium
IPSC 200632.7Easy
IPSC 200734.2Medium
IPSC 200854.9Medium
ITMO Internet Olympiads 12.11.201126.1Hard
ITMO Internet Olympiads 15.10.201146.4Hard
ITMO Internet Olympiads 17.09.201113.8Medium
Icelandic High School Competition 201412.2Easy
International Collegiate Programming Contest (ACM-ICPC) Dress Rehearsal 2012123.6Medium
International Collegiate Programming Contest (ACM-ICPC) Dress Rehearsal 201513.4Medium
International Collegiate Programming Contest (ACM-ICPC) World Finals 2012126.7Hard
International Collegiate Programming Contest (ACM-ICPC) World Finals 2013116.3Hard
International Collegiate Programming Contest (ACM-ICPC) World Finals 2014126.5Hard
International Collegiate Programming Contest (ACM-ICPC) World Finals 2015134.8Medium