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C 小魂和他的数列 题解还没太想明白，想明明白白了再写 #include<stdio.h> #include<algorithm> using namespace std; typedef long long ll; const int N=600500; const ll mod=998244353; ll c[N][15],ans[N][15]; int a[N],b[...

牛客假日团队赛19（树形dp） 链接：https://ac.nowcoder.com/acm/contest/1126/A 来源：牛客网 After many weeks of hard work, Bessie is finally getting a vacation! After many weeks of hard work, Bessie is finally getting a vac...