Cod sursa(job #2420536)
| Utilizator | Data | 12 mai 2019 15:08:21 | |
|---|---|---|---|
| Problema | Kperm | Scor | 100 |
| Compilator | cpp-64 | Status | done |
| Runda | Arhiva de probleme | Marime | 0.58 kb |
#include<fstream>
#define m 666013
using namespace std;
ifstream fin ("kperm.in");
ofstream fout("kperm.out");
long long p,c,n,k,r,i,j,a;
int main()
{
fin>>n>>k;
c=n/k;
r=n%k;
if(k%2==0)
{
fout<<0;
return 0;
}
p=1;a=1;
for(i=1;i<=c+1;i++)
a=(a*i)%m;
for(i=1;i<=r;i++)
p=(p*a)%m;
a=1;
for(i=1;i<=c;i++)
a=(a*i)%m;
for(i=1;i<=k-r;i++)
p=(p*a)%m;
a=1;
for(i=1;i<=r;i++)
a=(a*i)%m;
p=(p*a)%m;
a=1;
for(i=1;i<=k-r;i++)
a=(a*i)%m;
fout<<(p*a)%m;
return 0;
}
