搜索 - 科创

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鸽巢原理是这样叙述的：如果有k个鸽巢，多于k只鸽子，每只鸽子在一个鸽巢内，那么必有一个鸽巢内至少有两只鸽子。

突然想到假如结合一下编程类书籍特色，那么组合学开头便是这样：你已经掌握鸽巢原理了，下面来完成这道例题吧：Ex.1 证明霍尔婚配定理（答案略）

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