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NC16596 [NOIP2011]计算系数

https://ac.nowcoder.com/acm/problem/16596 点击查看代码 #include <bits/stdc++.h> using namespace std; #define int long long int mod = 10007; int frac[1002]; void ini() { frac[0] = frac[1] = 1; for(int i=2;i<=1001;++i) frac[i] = frac[