USACO 2021 December Contest, Bronze Problem 3. Walking Home Bessie the cow is trying to walk from her favorite pasture back to her barn. The pasture and farm are on an N×NN×N grid (2≤N≤502≤N≤50), w...
USACO 2021 December Contest, Bronze Problem 2. Air Cownditioning Farmer John's cows NN are very particular about the room temperature in their barn. Some cows like the temperature to be on the cool...
USACO 2021 December Contest, Bronze Problem 1. Lonely Photo Farmer John has recently acquired NN new cows (3≤N≤5×105)(3≤N≤5×105), each of whose breed is either Guernsey or Holstein. The cows are cu...
USACO 2021 December Contest, Silver Problem 3. Convoluted Intervals The cows are hard at work trying to invent interesting new games to play. One of their current endeavors involves a set of NN int...
USACO 2021 December Contest, Silver Problem 2. Connecting Two Barns Farmer John's farm consists of a set of NN fields (1≤N≤105)(1≤N≤105), conveniently numbered 1…N1…N. Between these fields are MM b...
USACO 2021 December Contest, Silver Problem 1. Closest Cow Wins Farmer John owns a long farm along the highway that can be considered somewhat like a one-dimensional number line. Along the farm, th...
Final Results: USACO 2021 December Contest, Gold Key: * = Correct x = Wrong Answer (including possibly empty or missing output file) t = Timeout c = Didn't Compile ! = Run-time error or exce...
USACO 2021 December Contest, Gold Problem 3. Bracelet Crossings Bessie the cow enjoys arts and crafts. In her free time, she has made NN (1≤N≤501≤N≤50) bracelets, conveniently numbered 1…N1…N. The ...
USACO 2021 December Contest, Gold Problem 2. HILO Bessie knows a number x+0.5x+0.5 where xx is some integer between 00 to N,N, inclusive (1≤N≤2⋅1051≤N≤2⋅105). Elsie is trying to guess this number. ...
