C语言程序设计：c=m!/(n!*(m-n)!)

C(n,m)=n!/(m!*(n-m)!)，C(n,m)=p1a1-b1-c1p2a2-b2-c2…pkak-bk-ck,n<=10,000,000

[cpp]

#include<cstdio>

constintmaxn=1000000;

#include<vector>

usingnamespacestd;

boolarr[maxn+1]={false};

vector<int