#define _USE_MATH_DEFINES
#include <cstdio>
#include <iostream>
#include <sstream>
#include <fstream>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <complex>
#include <string>
#include <vector>
#include <list>
#include <queue>
#include <stack>
#include <set>
#include <map>
#include <bitset>
#include <numeric>
#include <limits>
#include <climits>
#include <cfloat>
#include <functional>
using namespace std;

const double EPS = 1.0e-8;

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

    double ans1 = 0.0;
    double ans2 = 0.0;
    for(int i=0; i<n; ++i){
        double a;
        cin >> a;

        ans1 += pow(b, a - 1) * a;
        if(abs(a + 1.0) < EPS)
            ans2 += log(b);
        else
            ans2 += pow(b, a + 1) / (a + 1);
    }

    printf("%.10f\n", ans1);
    printf("%.10f\n", ans2);

    return 0;
}