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Pro · 12 mo
🔥 0 day streak
Start here
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Start Here: block 1 of 14
Hash Lookup & Counting. Watch the block run, memorize it in your language, then solve Two Sum.
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Open the map
12 lines, 50 stations, 500 stops, in prerequisite order. Zoom from the network to one problem.
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Target a company
Pick from 24 researched company routes.
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Play a game
Train pattern recognition fast.
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