Problem sources

Problem Source
Problems
Average Difficulty
2004 ACM ICPC Mid-Central North American Regional Contest74.1Medium
2012 University of Chicago Invitational Programming Contest105.8Hard
2013 ACM-ICPC North American Qualifier114.1Medium
2013 University of Chicago Invitational Programming Contest117.3Hard
2014 Greater New York Region ACM Regional Contest93.6Medium
2014 ICPC North America Qualifier114.5Medium
2014 Southeast USA Regionals Division 196.8Hard
2014 Virginia Tech High School Programming Contest102.6Easy
2015 ACM ICPC Singapore Regional116.1Hard
2015 Greater New York Region ACM Regional Contest93.6Medium
2015 ICPC East-Central NA Regional Contest96Hard
2015 ICPC East-Central NA Regional Contest Practice Session42.4Easy
2015 ICPC Mid-Central Regional103.9Medium
2015 ICPC North American Qualifier Contest112.9Medium
2015 Southeast USA Regionals Division 195.1Medium
2015 Virginia Tech High School Programming Contest82.7Easy
2016 Atlantic Canadian Preliminary Contest23.8Medium
2016 Greater New York Region ACM Regional Contest104.5Medium
2016 ICPC East-Central NA Regional Contest105.1Medium
2016 ICPC Mid-Central Regional84.5Medium
2016 ICPC North American Qualifier Contest124.7Medium
2016 Mid-Atlantic Regional16.7Hard
2016 Southeast USA Regionals Division 1104.3Medium
2016 Virginia Tech High School Programming Contest103.2Medium
2017 ACM ICPC North Central North America Regional Contest84.6Medium
2017 Atlantic Canadian Preliminary Contest24Medium
2017 Greater New York Region ACM Regional Contest104.5Medium
2017 ICPC East-Central NA Regional Contest105Medium
2017 ICPC Mid-Atlantic Regional Contest86.3Hard
2017 ICPC Mid-Atlantic Regional Practice Contest11.7Easy
2017 ICPC Mid-Central Regional73.7Medium
2017 ICPC North American Qualifier Contest134.1Medium
2017 Virginia Tech High School Programming Contest124.1Medium
2018 ACM-ICPC North Central North America Regional Contest104.5Medium
2018 Atlantic Canadian Preliminary Contest83.8Medium
2018 ICPC Asia Singapore Regional125.7Hard
2018 ICPC East-Central NA Regional Contest106.8Hard
2018 ICPC East-Central NA Regional Practice Contest63.4Medium
2018 ICPC Mid-Atlantic Regional Contest85Medium
2018 ICPC Mid-Central Regional113.7Medium
2018 ICPC North American Qualifier Contest135.3Medium
2018 ICPC South Central USA Regional Contest124.8Medium
2018 Virginia Tech High School Programming Contest134.4Medium
2019 Atlantic Canadian Preliminary Contest74.2Medium
2019 ICPC East-Central NA Regional Contest115.3Medium
2019 ICPC Greater New York Regional Programming Contest11.3Easy
2019 ICPC Mid-Central Regional124.9Medium
2019 ICPC North American Qualifier Contest134.4Medium
2019 ICPC Pacific Northwest Regional Programming Contest11.5Easy
2019 ICPC Southeast USA Regional Programming Contest12.6Easy
2019 ICPC Southern California Regional Programming Contest12.4Easy
2019 PacNW Programming Contest11.5Easy
2019 Virginia Tech High School Programming Contest134.4Medium
2019 Virginia Tech High School Programming Contest (Practice)33.4Medium
2020 ICPC East-Central NA Regional Contest125.1Medium
2020 ICPC North America Regionals (March 6 2021)215.4Medium
2020 ICPC North American Qualifier Contest46.9Hard
2020 Virginia Tech High School Programming Contest145.3Medium
2020 Virginia Tech High School Programming Contest (Practice)33Medium
2020-2021 North Central North America and Southern California ICPC Regional Contest124.8Medium
2021 Atlantic Canadian Programming Competition94.5Medium
2021 ICPC East-Central NA Regional Contest135.9Hard
2021 ICPC North America Division Championships136.2Hard
2021 ICPC North America Regional Programming Contests (March 5 2022)215.1Medium
2021 ICPC North America Regionals (February 26 2022)135.1Medium
2021 ICPC North America Regionals Practice (March 5 2022)31.3Easy
2021 ICPC North American Qualifier Contest (Jan 2022)145.1Medium
2021/2022 Southern California Regional ICPC12.5Easy
2022 Atlantic Canadian Programming Competition54.7Medium
2022 ICPC North America Championship136.7Hard
2022 ICPC North America Championship Practice14.1Medium
2022 ICPC North America Qualifier124.5Medium
2022 ICPC North America Regional Contests (February 25, 2023)165.7Hard
2022 ICPC North America Regional Programming Contests (February 25, 2023)285.3Medium
2023 Atlantic Canadian Programming Competition75.8Hard
2023 ICPC North America Championship136.7Hard
2023 ICPC North America Qualifier 30 September125.2Medium
2023 ICPC North America Regional Programming Contests (February 24, 2024)235.2Medium
2023 North America East Division Contest126Hard
2024 Atlantic Canadian Programming Competition75.1Medium
2024 ICPC North America Championship136.2Hard
2024 ICPC North America Qualifier124.9Medium
2024 ICPC Pacific Northwest Regional (November 16, 2024)184.5Medium
2024 ICPC South Central, South East and Mid Atlantic Regional (November 16, 2024)174.8Medium
2024 North America East Division Contest135.1Medium
2025 ICPC North America Championship135.5Medium
ACM-ICPC World Finals 2019115.5Hard
ACM/ICPC Mid-Central USA 2014 Regional Contest94.1Medium
Adapted from KTH CSC Popup 2002 Session 113.8Medium
Adapted from Nada Open 200416.5Hard
Adapted from Norwegian/Swedish Championships 200318.8Hard
Adapted from Swedish Championships 200012.6Easy
Alberta Collegiate Programming Contest 201693.9Medium
Alberta Collegiate Programming Contest 201794.2Medium
Alberta Collegiate Programming Contest 201885.5Hard
Alberta Collegiate Programming Contest 2020124.5Medium
Alberta Collegiate Programming Contest 2021154.1Medium
Alberta Collegiate Programming Contest 2022144Medium
Alberta Collegiate Programming Contest 2023146Hard
Alberta Collegiate Programming Contest 2024135.2Medium