USACO 2020 US Open Contest, Platinum Problem 1. Sprinklers 2: Return of the Alfalfa Return to Problem List Farmer John has a small field in the shape of an NN by NN grid (1≤N≤20001≤N≤2000) where th...
USACO 2022 US Open Contest, Bronze Problem 3. Alchemy Always keen to learn new hobbies, Bessie the cow is learning how to transform metals. She has aiai (0≤ai≤1040≤ai≤104) units of metal ii for 1≤i...
USACO 2022 US Open Contest, Bronze Problem 2. Counting Liars Bessie the cow is hiding somewhere along the number line. Each of Farmer John's NN other cows (1≤N≤10001≤N≤1000) have a piece of informa...
USACO 2022 US Open Contest, Bronze Problem 1. Photoshoot Farmer John, desperate to win the award for best cow photographer at the county fair, is trying to take the perfect photograph of his NN cow...
USACO 2022 US Open Contest, Silver Problem 3. COW Operations Bessie finds a string ss of length at most 2⋅1052⋅105 containing only the three characters 'C', 'O', and 'W'. She wants to know if it's ...
USACO 2022 US Open Contest, Silver Problem 2. Subset Equality The cows are trying out a new method of exchanging coded messages with each-other where they mix irrelevant letters in among relevant l...
USACO 2022 US Open Contest, Silver Problem 1. Visits Each of Bessie’s NN (2≤N≤1052≤N≤105) bovine buddies (conveniently labeled 1…N1…N) owns her own farm. For each 1≤i≤N1≤i≤N, buddy ii wants to visi...
Final Results: USACO 2022 US Open Contest, Gold Key: * = Correct x = Wrong Answer (including possibly empty or missing output file) t = Timeout c = Didn't Compile ! = Run-time error or exceeded mem...
USACO 2022 US Open Contest, Gold Problem 3. Balancing a Tree Farmer John has conducted an extensive study of the evolution of different cow breeds. The result is a rooted tree with NN (2≤N≤1052≤N≤1...
