USACO 2020 US Open Contest, Silver Problem 3. The Moo Particle Quarantined for their protection during an outbreak of COWVID-19, Farmer John's cows have come up with a new way to alleviate their bo...
USACO 2020 US Open Contest, Silver Problem 2. Cereal Farmer John's cows like nothing more than cereal for breakfast! In fact, the cows have such large appetites that they will each eat an entire bo...
USACO 2020 US Open Contest, Silver Problem 1. Social Distancing Farmer John is worried for the health of his cows after an outbreak of the highly contagious bovine disease COWVID-19. In order to li...
Final Results: USACO 2020 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 2020 US Open Contest, Gold Problem 3. Exercise Farmer John has come up with a new morning exercise routine for the cows (again)! As before, Farmer John's NN cows (1≤N≤1041≤N≤104) are standing...
USACO 2020 US Open Contest, Gold Problem 2. Favorite Colors Each of Farmer John's NN cows (1≤N≤2⋅1051≤N≤2⋅105) has a favorite color. The cows are conveniently labeled 1…N1…N (as always), and each c...
USACO 2020 US Open Contest, Gold Problem 1. Haircut Tired of his stubborn cowlick, Farmer John decides to get a haircut. He has NN (1≤N≤1051≤N≤105) strands of hair arranged in a line, and strand ii...
Final Results: USACO 2020 US Open Contest, Platinum Key:* = Correctx = Wrong Answer (including possibly empty or missing output file)t = Timeoutc = Didn't Compile! = Run-time error or exceeded memo...
USACO 2020 US Open Contest, Platinum Problem 3. Circus The NN cows of Farmer John's Circus (1≤N≤1051≤N≤105) are preparing their upcoming acts. The acts all take place on a tree with vertices labele...
