HBC230859[HAOI2008]硬币购物,容斥原理与鸽巢原理,排列组合Perfect Matchings题解 AAA gets a complete graph of 2n2n2n vertices, where every pair of distinct vertices is connected by... 算法基础篇 2023-11-18 49 #HBC230859[HAOI2008]硬币购物 #容斥原理与鸽巢原理 #排列组合Perfect Matchings题解
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