#include<bits/stdc++.h>
using namespace std;
using Int = long long;

struct Precision{
  Precision(){
    cout<<fixed<<setprecision(12);
  }
}precision_beet;

//INSERT ABOVE HERE
signed main(){
  Int n;
  double b;
  cin>>n>>b;
  vector<double> a(n);
  for(Int i=0;i<n;i++) cin>>a[i];
  {
    double res=0;
    for(Int i=0;i<n;i++) res+=pow(b,a[i]-1)*a[i];
    cout<<res<<endl;
  }
  {
    double res=0;
    for(Int i=0;i<n;i++){
      if(a[i]==-1) res+=log(b);
      else res+=pow(b,a[i]+1)/(a[i]+1);
    }
    cout<<res<<endl;
  }
  
  return 0;
}