#include <bits/stdc++.h>

using namespace std;

#define REP(i,n) for(int i=0; i<(int)(n); i++)
#define FOR(i,b,e) for (int i=(int)(b); i<(int)(e); i++)
#define ALL(x) (x).begin(), (x).end()

const double PI = acos(-1);

double f(const vector<double> &a, double b) {
  double ret = 0;
  REP (i, a.size())
    ret += a[i] * pow(b, a[i]-1);
  return ret;
}

double F(const vector<double> &a, double b) {
  double ret = 0;
  REP (i, a.size()) {
    if (a[i] == -1)
      ret += log(b);
    else
      ret += 1.0 / (a[i]+1) * pow(b, a[i]+1);
  }
  return ret;
}

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  int n;
  double b;
  cin >> n >> b;

  vector<double> a(n);
  REP (i, n) cin >> a[i];

  cout << fixed << setprecision(12);
  cout << f(a, b) << endl;
  cout << F(a, b) << endl;
  
  return 0;
}