USACO Gold - Online
Instructor: Daniel Zhang, IOI Gold, 2 times USACO finalist
Gold requirements: Ability to consistently solve silver problems. The Gold material assumes knowledge of Silver class material, such as knowing how to do BFS, DFS, and sorting, as well as know how to use standard data structures like arraylists, linked lists, stacks, queues, deques, heaps (priority queues), and binary search trees (TreeMap/map, TreeSet/set).