#include <bits/stdc++.h>
#define REP(i,a,b) for(i=a;i<b;i++)
#define rep(i,n) REP(i,0,n)
using namespace std;

int main() {
  int i,j;
  cin.tie(0);
  ios::sync_with_stdio(false);
  int N;
  int B;
  double c = 0;
  double d = 0;
  cin >> N;
  cin >> B;
  rep(i,N) {
    double a;
    cin >> a;
    c += a*pow(B,a-1);
    if(a == -1) {
      d += log((double)B);
    }
    else d += 1/(a+1)*( pow(B,a+1) );
  }
  printf("%.20lf\n",c);
  printf("%.20lf\n",d);
  return 0;
}