#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<n;i++)
using namespace std;
using ll =  long long ;
using P = pair<int,int> ;
const ll INF = 1e10;
const int MOD = 1000000007;

int main(){
    int n;
    cin >> n;
    double b;
    cin >> b;
    vector<double> a(n);
    rep(i,n) cin >> a[i];
    double ans1 = 0,ans2 = 0;
    rep(i,n){
        if(a[i] == -1.0){
            ans1 += a[i] * pow(b,a[i]-1);
            ans2 += log(b);
        }else{
            ans1 += a[i] * pow(b,a[i]-1);
            ans2 += pow(b,a[i]+1) / (a[i]+1);
        }
    }
    cout << setprecision(20) << ans1 << endl << ans2 << endl;
    return 0;
}