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Cod sursa(job #27983)
#include<stdio.h>
#define konst 666031
long long fact(long long x)
{long long f=1,i;
for(i=2;i<=x;i++)
f=(f*i)%konst;
return f;
}
long long power(long long baza,long long exp)
{long long po,i;
po=1;
for(i=1;i<=exp;i++)
po=(po*baza)%konst;
return po;
}
int main()
{long long sol=0,n,k,r,c;
freopen("kperm.in","r",stdin);
scanf("%lld%lld",&n,&k);
c=n/k;
r=n%k;
//c=fact(25);
if(k%2)
sol=(((((fact(r)*fact(k-r))%konst)*power(fact(c+1),r))%konst)*power(fact(c),k-r))%konst;
freopen("kperm.out","w",stdout);
printf("%lld",sol%konst);
fclose(stdout);
return 0;
}