Problem Sources

Problem source	Problems	Average Difficulty
ACM-ICPC World Finals 2019	11	4.8
International Collegiate Programming Contest (ACM-ICPC) World Finals 2012	12	6.4
International Collegiate Programming Contest (ACM-ICPC) World Finals 2013	11	6.0
International Collegiate Programming Contest (ACM-ICPC) World Finals 2014	12	5.9
International Collegiate Programming Contest (ACM-ICPC) World Finals 2015	13	4.4
International Collegiate Programming Contest (ACM-ICPC) World Finals 2016	13	5.2
International Collegiate Programming Contest (ACM-ICPC) World Finals 2017	12	5.0
International Collegiate Programming Contest (ACM-ICPC) World Finals 2018	11	5.2
Kattis	2	1.7