#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); i++)
using namespace std;
typedef long long ll;

int main(){
    cin.tie(0);
    ios::sync_with_stdio(0);
    
    using ld = long double;
    int N; cin >> N;
    ld B; cin >> B;
    ld ans1 = 0, ans2 = 0;
    rep(i,N) {
        ld a; cin >> a;
        ans1 += a * pow(B, a - 1);
        if(a == -1.0) {
            ans2 += logl(B);
        } else {
            ans2 += pow(B, a + 1) / (a + 1);
        }
    }
    cout << fixed << setprecision(20);
    cout << ans1 << "\n";
    cout << ans2 << "\n";
}