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

//#define int long long

typedef long long ll;
typedef pair<int,int>pint;
typedef vector<int>vint;
typedef vector<pint>vpint;
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define all(v) (v).begin(),(v).end()
#define rep(i,n) for(int i=0;i<(n);i++)
#define reps(i,f,n) for(int i=(f);i<(n);i++)
#define each(it,v) for(__typeof((v).begin()) it=(v).begin();it!=(v).end();it++)
template<class T,class U>void chmin(T &t,U f){if(t>f)t=f;}
template<class T,class U>void chmax(T &t,U f){if(t<f)t=f;}

int N;
double B;
double A[10];

signed main(){
    cin>>N>>B;
    rep(i,N)cin>>A[i];

    double ans1=0,ans2=0;
    rep(i,N){
        ans1+=pow(B,A[i]-1)*A[i];
        if(A[i]==-1.0)ans2+=log(B);
        else ans2+=1.0/(A[i]+1)*pow(B,A[i]+1);
    }
    printf("%.20f\n%.20f\n",ans1,ans2);
    return 0;
}