2020 USACO Bronze February Contest Problems Problem 1. Triangles Problem 2. Mad Scientist Problem 3. Swapity Swap
2020 USACO Silver December Contest Problems Problem 1. Cowntagion Problem 2. Rectangular Pasture Problem 3. Stuck in a Rut
2020 USACO Platinum December Contest Problems Problem 1. Sleeping Cows Problem 2. Spaceship Problem 3. Cowmistry
2020 USACO Gold December Contest Problems Problem 1. Replication Problem 2. Bovine Genetics Problem 3. Square Pasture
2020 USACO Bronze December Contest Problems Problem 1. Do You Know Your ABCs_ Problem 2. Daisy Chains Problem 3. Stuck in a Rut
2021 USACO Silver US Open Contest Problems Problem 1. Maze Tac Toe Problem 2. Do You Know Your ABCs_ Problem 3. Acowdemia
2021 USACO Platinum US Open Contest Problems Problem 1. United Cows of Farmer John Problem 2. Routing Schemes Problem 3. Balanced Subsets
2021 USACO Gold US Open Contest Problems Problem 1. United Cows of Farmer John Problem 2. Portals Problem 3. Permutation
2021 USACO Bronze US Open Contest Problems Problem 1. Acowdemia I Problem 2. Acowdemia II Problem 3. Acowdemia III
2021 USACO Silver January Contest Problems Problem 1. Dance Mooves Problem 2. No Time to Paint Problem 3. Spaced Out