2020 USACO Platinum US Open Contest Problems Problem 1. Sprinklers 2- Return of the Alfalfa Problem 2. Exercise Problem 3. Circus
2020 USACO Gold US Open Contest Problems Problem 1. Haircut Problem 2. Favorite Colors Problem 3. Exercise
2020 USACO Bronze US Open Contest Problems Problem 1. Social Distancing I Problem 2. Social Distancing II Problem 3. Cowntact Tracing
2020 USACO Silver January Contest Problems Problem 1. Berry Picking Problem 2. Loan Repayment Problem 3. Wormhole Sort
2020 USACO Platinum January Contest Problems Problem 1. Cave Paintings Problem 2. Non-Decreasing Subsequences Problem 3. Falling Portals
2020 USACO Gold January Contest Problems Problem 1. Time is Mooney Problem 2. Farmer John Solves 3SUM Problem 3. Springboards
2020 USACO Bronze January Contest Problems Problem 1. Word Processor Problem 2. Photoshoot Problem 3. Race
2020 USACO Silver February Contest Problems Problem 1. Swapity Swapity Swap Problem 2. Triangles Problem 3. Clock Tree
2020 USACO Platinum February Contest Problems Problem 1. Delegation Problem 2. Equilateral Triangles Problem 3. Help Yourself
2020 USACO Gold February Contest Problems Problem 1. Timeline Problem 2. Help Yourself Problem 3. Delegation