CoursesBacktracking & GreedyConstraint Search
Path with Maximum Gold
Grid backtracking with a value: DFS from every nonzero start, mark cells so one path never revisits them, and restore every mark so other branches and starts see the full mine.
AlgoFox Pro
Backtracking & Greedy is part of AlgoFox Pro
You can read the whole course outline here. The exercises are in the app, along with your streak, your mistake review, and the progress that carries across your devices.
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