//#include <iostream>
#include<unordered_map>
#include <iomanip>
#include <cstdio>
#include<vector>
#include <cmath>
#include <queue>
#define ll long long
using namespace std;

int n,m,k,l,x;

struct pos {
    pos(double time_, int loc_) : time(time_), loc(loc_) {}
    double time;
    int loc;
    friend bool operator<(const pos & l, const pos & r) {
        return (l.time > r.time);
    }
};

int main()
{
    //ios::sync_with_stdio(false);
    //cout << setprecision(10);
    while(scanf("%d %d", &n, &m) != -1)
    {
        double sum = 0;
        priority_queue<pos> pq;
        vector<bool> done = vector<bool>(n+1, false);
        vector<int> data = vector<int>(n+1);
        vector<int> next = vector<int>(n+1);
        vector<int> prev = vector<int>(n+1);
        vector<int> str = vector<int>(n+1,1);
        vector<double> times = vector<double>(n+1);
        for(int i = 0; i < n; i++){
            scanf("%d", &data[i]);
            next[i] = i+1;
            prev[i] = i-1;
            sum += data[i]/(double)m;
            pq.push(pos(data[i]/(double)m,i));
            times[i]= data[i]/(double)m;
        }
        double rtime = 0;
        double acttime = 0;
        while(!pq.empty()) {
            pos p = pq.top();
            pq.pop();
            //printf("%.10f %d\n", p.time, p.loc);
            if (!done[p.loc]) {
                acttime = p.time;
                if (p.loc == n-1) {
                    rtime = acttime;
                }

                done[p.loc] = true;
                int p1 = prev[p.loc], p2 = next[p.loc];
                int diff = p2 - p1;
                if (p1>= 0)
                    next[p1] = p2;
                if (p2 < n) {
                    prev[p2] = p1;
                    double newtime = (times[p2]-acttime)*(double)str[p2]/(double)diff + acttime;
                    //printf("%d %d %d %.10f\n",p2,diff, str[p2], newtime);
                    times[p2] = newtime;
                    str[p2] = diff;
                    pq.push(pos(newtime, p2));

                }

            }

        }
        printf("%.10f %.10f\n", rtime, acttime);
    }




    return 0;
}