Competitive Programming
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After a lot of hard work and several failed attempts, I finally passed USACO Silver in the latest USACO competition. The difficulty from USACO Bronze to Silver was no joke: silver introduced recursion, graph problems, prefix sum arrays, pointers and greedy problems to name a few. While I certainly knew many of these before, learning…
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![Pareidolia [USACO 2023 US Open Contest, Silver, Problem 3]](https://lingyuanyan.blog/wp-content/uploads/2024/12/generate-an-image-of-the-word-bessie-that-contain-elements.png?w=1024)
I recently solved this very interesting problem while practicing for the upcoming Usaco competition in two weeks. Here is a link to the problem if you would like to read it for yourself. In summary, the problem gives you a string s, and asks you to return the sum of the number of occurrences of…
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