#include <iostream>
#include <vector>
#include <cmath>
#include <iomanip>
using namespace std;
int main(){
  int n,b;cin>>n>>b;
  vector<double> A(n);
  for(int i = 0; n > i; i++){
    cin>>A[i];
  }
  //微分
  double ans1 = 0;
  for(int i = 0; n > i; i++){
    if(A[i] != 0.0){
      ans1 += A[i]*pow(b,A[i]-1);
    }
  }
  double ans2 = 0;
  for(int i = 0; n > i; i++){
    if(A[i] == -1.0){
      ans2 += log(b);
      //cout << log(b) << " ";
    }else{
      ans2 += pow(b,A[i]+1)/(A[i]+1);
      //cout << pow(b,A[i]+1)/(A[i]+1) << " ";
    }
  }
  //cout << endl;
  cout << fixed << setprecision(10) << ans1 << endl;
  cout << fixed << setprecision(10) << ans2 << endl;
}