One Mentor Academy

    USACO 2023 Past Paper & Solutions

    USA Computing Olympiad 2023 — 3 algorithmic problems per contest, judged automatically on hidden test data, 4 hours (from opening the contest). Scoring: 1000 points per contest; promotion between Bronze, Silver, Gold and Platinum divisions.

    Papers in this sitting

    • USACO 2023 Bronze — 3 algorithmic problems per contest, judged automatically on hidden test data, official answer key included
    • USACO 2023 Silver — 3 algorithmic problems per contest, judged automatically on hidden test data, official answer key included
    • USACO 2023 Gold — 3 algorithmic problems per contest, judged automatically on hidden test data, official answer key included
    • USACO 2023 Platinum — 3 algorithmic problems per contest, judged automatically on hidden test data, official answer key included
    Open the official archive

    How to work through this paper

    1. Sit the full paper timed at 4 hours (from opening the contest), no calculator or notes.
    2. Mark it against the official key before you look at any solution.
    3. Rewrite complete solutions for every question you missed or guessed — writing it out is what moves the technique into recall.
    4. Tag each loss by topic (Complete search, Sorting & two pointers, Graphs, Dynamic programming, Advanced structures).
    5. Re-sit the same paper one week later and compare the time to your first attempt.

    Topics tested in USACO 2023

    Complete searchSorting & two pointersGraphsDynamic programmingAdvanced structures

    Stuck on a USACO 2023 question?

    Send us the question number. A mentor who has sat and medalled in USACO will reply with a step-by-step walkthrough and the faster competition method.

    Free to ask. No spam, ever — we only reply about your question.

    View the USACO course

    FAQs

    Where can I find the USACO 2023 paper and answers?
    The official USACO 2023 paper and answer key are published by USACO — use the official archive link on this page. We do not re-host copyrighted papers, but our mentors walk through every question with you step by step.
    How hard was the USACO 2023 paper?
    Like every year, the first section is speed-and-accuracy work and the final third carries the discrimination. Sit it timed (4 hours (from opening the contest)), mark it against the official key, then rewrite full solutions for anything you missed or guessed.
    Can I get worked solutions for USACO 2023?
    Yes. Book a free trial session and bring the questions you are stuck on — a mentor will work through the full solution and the faster competition method, then set targeted practice on the same archetype.