Problems and Contests


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USACO 2020-21 Open Contest

The last contest of the 2020-2021 USACO season is running from April 2nd to April 5th this weekend. Good luck to everyone! This forum will be read-only for the duration of the contest window. Do not discuss the contest …

7 607 April 10, 2021
Maze Tac Toe
3 41 April 12, 2021
Introduction to DP: Angry Cows
0 27 April 12, 2021
Acowdemia Silver WA (2021 US Open)
4 51 April 11, 2021
CSES - Subarray Sums II - Time Complexity
3 64 April 11, 2021
Shortening Solutions for USACO
5 206 April 8, 2021
Regarding Sample Input
5 260 April 7, 2021
USACO 2016 January Contest, Silver Problem 3. Build Gates. Why is my answer not giving an output?
8 112 April 1, 2021
2020 Feb USACO Bronze (Swapity Swap)
7 80 April 1, 2021
CF Jury Meeting (Assigned in CPI Silver class)
8 228 March 31, 2021
Snow Boots Silver Question
5 99 March 31, 2021
Cowntagion (Silver Dec 2020)
3 75 March 31, 2021
Need Help on Bronze Problem
1 78 March 30, 2021
Tree Diameter CSES
3 107 March 29, 2021
USACO 2021 January Contest, Silver Problem 2. No Time to Paint
3 96 March 29, 2021
Generally, are the U.S. Opens harder than the regular contests?
2 132 March 29, 2021
2019 USACO Open Silver Problem 3
9 122 March 27, 2021
2020 Dec Silver Rectangular Pasture
9 186 March 26, 2021
Commuter Pass
13 106 March 22, 2021
Cow Steeplechase II Java Sweep Line Implementation
2 71 March 21, 2021
USACO 2020 US Open Bronze Problem 2
2 55 March 21, 2021
Alternate Solution to The Meeting Place Cannot Be Changed
2 79 March 20, 2021
Pell's Equation
4 92 March 19, 2021
Floodfill 2016 January Silver Problem 3
18 174 March 18, 2021
2019 January Bronze Problem 3 Guess the Animal
2 71 March 17, 2021
Question about Time Complexity of Program
2 68 March 17, 2021
Baltic OI 2013 - Tracks in the Snow
2 72 March 17, 2021
Terminal Doesn't Agree With Test Server
11 140 March 16, 2021
USACO February 2018 Silver Problem 1 - Rest Stops
5 73 March 15, 2021
CSES Nested Ranges Count
4 72 March 14, 2021