c++阶乘取模

#include 
using namespace std;
long long n,p;
long long now;
const int a[100]={
682498929,491101308,76479948,723816384,67347853,27368307,625544428,199888908,888050723,927880474,
281863274,661224977,623534362,970055531,261384175,195888993,66404266,547665832,109838563,933245637,724691727,
368925948,268838846,136026497,112390913,135498044,217544623,419363534,500780548,668123525,128487469,30977140,
522049725,309058615,386027524,189239124,148528617,940567523,917084264,429277690,996164327,358655417,568392357,
780072518,462639908,275105629,909210595,99199382,703397904,733333339,97830135,608823837,256141983,141827977,
696628828,637939935,811575797,848924691,131772368,724464507,272814771,326159309,456152084,903466878,92255682,
769795511,373745190,606241871,825871994,957939114,435887178,852304035,663307737,375297772,217598709,624148346,
671734977,624500515,748510389,203191898,423951674,629786193,672850561,814362881,823845496,116667533,256473217,
627655552,245795606,586445753,172114298,193781724,778983779,83868974,315103615,965785236,492741665,377329025,
847549272,698611116
};
const int MOD=1000000007;
int main()
{
int t;cin>>t;
    while(t--)
    {
        cin>>n;
    p=1000000007;
    if (p==1000000007)
    {
        if (n>=p)
        {
            cout<<"0";
            return 0;
        }
        if(n<10000000)
            now=1;
        else now=a[n/10000000-1];
        for(int i=n/10000000*10000000+1;i<=n;i++)
            now=now*i%MOD;
    } else
    {
        now=1;
        if (n>=p) now=0;
        else
            for(int i=1;i<=n;i++)
                now=now*i%p;
    }
    cout<

虽然说一般还是选择java的Biginteger吧，参考一下挺好的。