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

int main()
{
  int n, b;
  cin >> n >> b;
  double s = 0, t = 0;
  for (int i = 0; i < n; i++){
    double a;
    cin >> a;
    s += a * pow(b, a - 1);
    if (abs(a + 1.0) < 1e-8) t += log(abs(b));
    else t += pow(b, a + 1) / (a + 1);
  }
  cout << fixed << setprecision(12);
  cout << s << endl << t << endl;
}