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

int main(){
    int n,b;
    cin >> n >> b;
    vector<double> a(n);
    for(auto &x:a) cin >> x;
    long double x1 = 0.0, x2 = 0.0;
    for(int i = 0; i < n; i++){
        x1 += a[i] * pow(b,a[i] - 1.0);
        if(a[i] == -1) x2 += log(b);
        else x2 += 1.0 / (a[i] + 1.0) * pow(b,a[i] + 1.0);
    }
    printf("%.10Lf\n%.10Lf\n",x1 ,x2);
    return 0;
}