Four hours, three problems, and tests you never get to see. A Bronze contest needs no advanced algorithms, but it rewards careful reading and the small skills that recent problems keep asking for.
The first division of the USA Computing Olympiad. Free online contests through the season.
How we train for it. Every past Bronze problem taken apart into the skills it needs, and short problems for each skill on its own, in Java or Python.
Checked against the official pages on October 13, 2026. If anything here disagrees with them, they are right.
Your own, at home or at school. You write your program in whatever editor you like, then upload the file through the USACO website. Nothing is installed for you and there is no special software.
Yes, as much as you want, on your own machine. Try the sample input, then make up harder inputs of your own, because the real tests are hidden. Testing your own code is expected.
C, C++, Java or Python. USACO aims to make every Bronze problem fully solvable in Python. In the higher divisions Python can be too slow for some problems.
Only reference material about the basic features of your programming language. Nothing else: no other websites, no code you wrote earlier, no templates, and no AI tools.
No. You work alone, from start to finish.
Four hours, or five for the US Open. A Bronze contest is open from Friday to Monday and you may start at any point in that window. Your timer starts when you open the problems and it does not pause.
From: USACO: contest details
Usually three. USACO says a contest typically has three or four.
You get a result for every test: a green box if your answer was right, a red one if not, with a letter for why (wrong answer, too slow, crashed or ran out of memory, or no output). You have to get the sample case right before you are shown the rest. If your code does not compile, you see the compiler's message.
Yes, you can fix your code and submit again. What you must not do is submit over and over just to work out what the hidden inputs are; the rules forbid that.
For most contests each test must finish within 2 seconds in C or C++, and 4 seconds in Java or Python. A problem can set its own limit. Memory is limited to about 256 MB unless the problem says otherwise.
From how many of a problem's tests your program gets right within the time limit. So a solution that handles most cases still earns most of that problem's points.
Score above the cut-off for that contest, which is announced once it ends. A perfect score promotes you straight away, and you may then start the Silver contest in the same weekend with a full clock.
From: USACO: contest details
Not in Bronze or Silver. Certified results, which mean starting in a fixed time slot, apply only to Gold and Platinum.
From: USACO: contest details
Anyone can enter the contests. Only pre-college students in the USA can be chosen for the training camp and the national teams.
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