Programming Contest Problem Types Of IOI

最新推荐文章于 2025-11-25 12:56:21 发布

翻译最新推荐文章于 2025-11-25 12:56:21 发布 · 690 阅读

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#types #combinations #search #algorithm #spring #path

通过分析发现，编程竞赛中仅有16种主要的问题类型，其中包括动态规划、贪心算法等。掌握其中40%的问题类型几乎可以确保获得IOI银牌，而掌握80%则几乎能确保获得金牌。

Programming Contest Problem Types

Hal Burch conducted an analysis over spring break of 1999 and made an amazing discovery: there are only 16 types of programming contest problems! Furthermore, the top several comprise almost 80% of the problems seen at the IOI. Here they are:

Dynamic Programming
Greedy
Complete Search
Flood Fill
Shortest Path
Recursive Search Techniques
Minimum Spanning Tree
Knapsack
Computational Geometry
Network Flow
Eulerian Path
Two-Dimensional Convex Hull
BigNums
Heuristic Search
Approximate Search
Ad Hoc Problems

The most challenging problems are Combination Problems which involve a loop (combinations, subsets, etc.) around one of the above algorithms - or even a loop of one algorithm with another inside it. These seem extraordinarily tricky to get right, even though conceptually they are ``obvious''.

If you can master solving just 40% of these problem types, you can almost guarantee a silver medal at the IOI. Mastering 80% moves you into the gold range almost for sure. Of course, `mastery' is a tough nut to crack! We'll be supplying a plethora of problems so that you can hone your skills in the quest for international fame.