/* -*- coding: utf-8 -*-
 *
 * 347.cc: No.347 微分と積分 - yukicoder
 */

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<stack>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<functional>
 
using namespace std;

/* constant */

const int MAX_N = 10;

/* typedef */

/* global variables */

/* subroutines */

/* main */

int main() {
  int n;
  double b;
  cin >> n >> b;

  double dfsum = 0, ifsum = 0;

  while (n--) {
    double ai;
    cin >> ai;

    dfsum += ai * pow(b, ai - 1);

    if (ai != -1.0) ifsum += pow(b, ai + 1) / (ai + 1);
    else ifsum += log(b);
  }

  printf("%.10lf\n%.10lf\n", dfsum, ifsum);
  return 0;
}