I did competitive programming from 2018 to 2021 and went to the USACO training camp in 2020 and 2021. Here are some of the worst programs I ever wrote, for your viewing pleasure.

NameDescription
USACO GuideA free, high quality guide for USACO
LibraryClean templates and algorithm implementations that I use
USACOClean USACO solutions
USACO CampMiscellaneous USACO Camp solutions
IOIIOI solutions
Google Code JamGoogle Code Jam solutions
ACSLACSL code and resources
Idiot Code-GolfReally stupid code competition
LCS ResourcesLadue Computer Science resources for competitive programming
LogLog of solved problems and notes