double a[20],t,s;
i,b,n;
main(){
scanf("%d%d",&n,&b);
for(;i<n;scanf("%lf",a+i++));
s=0;
for(i=0;i<n;i++)s+=a[i]?a[i]*pow(b,a[i]-1):0;
printf("%f\n",s);
s=0;
for(i=0;i<n;i++)s+=a[i]+1?pow(b,a[i]+1)/(a[i]+1):log(b);
i=!printf("%f",s);
}