#include <iostream>
#include <vector>
#include <iomanip>
#include <cmath>
using namespace std;
using ll = long long;

int n;
double b, a[15];

int main()
{
  cin >> n >> b;
  for (int i = 0; i < n; ++i)
    cin >> a[i];

  double bibun = 0.0, sekibun = 0.0;
  for (int i = 0; i < n; ++i)
  {
    bibun += a[i] * pow(b, a[i] - 1.0);
    if (a[i] == -1.0)
      sekibun += log(b);
    else
      sekibun += 1.0 / (a[i] + 1.0) * pow(b, a[i] + 1.0);
  }
  cout << fixed << setprecision(10) << bibun << endl
       << sekibun << endl;
  return 0;
}