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CONTESTS
USACO Silver
$190
Silver algorithms, data structures, and contest strategy for promotion track.
What’s included
- Silver topics pack
- Graph & DP intros
- Timed mocks
- Contest-day support
Pay $190
Prefer Stripe for instant activation (auth code + app download). Crypto / G2A stay pending until admin confirms.
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Stripe payments are verified by webhook. You'll get an auth code and download on the activate page after checkout.