#include <bits/stdc++.h>

using namespace std;

int main () {
	ios::sync_with_stdio(false);
	int a,b;
	while (cin>> a>> b){
		deque<pair<double,long long >> stack;
		long long num=0;
		for(int i=0;i<a;i++){
			cin >> num;
			double sum=0,start=0;
			long long cerpadla=1;
			while(!stack.empty()){
				double pom=cerpadla*b*(stack.front().first-start);
				if (sum+pom>num){
				break;
				}else{
					sum+=pom;
					cerpadla+=stack.front().second;
					start=stack.front().first;
					stack.pop_front();
				}
			}
			double pom=num-sum;
			start+=pom/(cerpadla*b*1.0);
			stack.push_front({start,cerpadla});
		}	
		cout<<setprecision(7) << stack.front().first << " "<< stack.back().first<<endl;	 	
	}

	return 0;
}