#include "bits/stdc++.h"
using namespace std;
#define FOR(i,j,k) for(int (i)=(j);(i)<(int)(k);++(i))
#define rep(i,j) FOR(i,0,j)
#define each(x,y) for(auto &(x):(y))
#define mp make_pair
#define all(x) (x).begin(),(x).end()
#define debug(x) cout<<#x<<": "<<(x)<<endl
#define smax(x,y) (x)=max((x),(y))
#define smin(x,y) (x)=min((x),(y))
#define MEM(x,y) memset((x),(y),sizeof (x))
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<ll> vll;

int main(){
    int N, B;
    cin >> N >> B;
    double x = 0, y = 0;
    rep(i, N){
        double a;
        cin >> a;
        x += a * pow(B, a - 1);
        if(abs(1.0 + a) > 1e-4)
            y += pow(B, a + 1) / (a + 1.0);
        else
            y += log(B);
    }

    cout << setprecision(20) << x << '\n' << y << '\n';
}