Hydro 题库 | Hydro OJ 官方题目数据：CSP-J/S 2019–2021、USACO 2026 First/Second 等题面与测试数据，适配 Hydro，通过 GitHub Releases 分发；不收录民间数据与 hack 数据。Official problem statements & test data for Hydro OJ: CSP-J/S, USACO, etc. Distributed via GitHub Releases; no unofficial or hack data.
csp competitive-programming online-judge test-data usaco oi hydro informatics-olympiad competitive-programming-reference csp-js csp-j csp-s test-dataset test-database problem-database hydrooj informatics-olympiads hydro-problems
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Updated
Sep 13, 2026