#include <bits/stdc++.h>

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

using namespace std;

typedef long long ll;
typedef long double ld;

const ld eps = 1e-9, pi = acos(-1.0);

int main() {
  int N; ld B;
  cin >> N >> B;
  vector<ld> a(N);
  REP(i,N) cin >> a[i];
  ld res1 = 0, res2 = 0;
  for (ld i: a) {
    res1 += i * pow(B, i-1);
    if (abs(i + 1) < eps) res2 += log(B);
    else res2 += pow(B, i+1) / (i+1);
  }
  cout << setprecision(12) << fixed;
  cout << res1 << endl << res2 << endl;
  return 0;
}