https://usaco.guide/
USACO Guide
A free collection of curated, high-quality competitive programming resources to take you from USACO Bronze to USACO Platinum and beyond. Written by top USACO...
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https://manifold.markets/C0DET1GER/how-many-people-from-us-will-promot
How many people (from US) will promote to Platinum in the USACO First Contest 2026? | Manifold
https://usaco.org/index.php "... As part of these changes, we are moving all competitors currently in platinum into the gold division for the start of this...
how many peoplefrom uspromoteplatinumusaco