import java.util.*;
public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        if(!scanner.hasNextInt()){
            System.out.println("Invalid input");
            return;
        }
        int n = sc.nextInt();
        if(n <= 0 || n>=10){
            System.out.println("Invalid input.");
            return;
        }
        int[] prices = new int[n];
        for(int i=0;i<n;i++){
            prices[i] = sc.nextInt();
        }
        int minPrice = prices[0];
        int maxProfit = 0;
        for(int i=1;i<n;i++){
            if(prices[i] - minPrice > maxProfit){
                maxProfit = prices[i] - minPrice;
            }
            if(prices[i] < minPrice){
                minPrice = prices[i];
            }
        }
        double percentage = 0.0;
        if(prices[0] != 0){
            percentage = (maxProfit * 100.0) / prices[0];
        }
        System.out.println(maxProfit);
        System.out.printf("%.2f\n", percentage);
    }
}