#include <bits/stdc++.h>
using namespace std;
#define REP(i, n) for(int(i)=0;(i)<(n);++(i))
#define in(T,V) T V;cin>>V;

int main(){
    int N,B;
    cin >> N >> B;
    double a[11];
    REP(i,N) cin >> a[i];

    double r = 0;
    REP(i,N) r += a[i] * pow(0.+B, a[i]-1);
    cout << setprecision(12) << r << endl;
    r = 0;
    REP(i,N){
        if(a[i] == -1.0){
            r += log(0.+B);
        } else {
            r += pow(0.+B, a[i]+1)/(a[i]+1);
        }
    }
    cout << setprecision(12) << r << endl;
}