import java.util.*;

public class _2108{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int[] arr = new int[N];
        int sum=0;
        for(int i=0; i<N; i++){
            arr[i] = sc.nextInt();
            sum += arr[i];
        }
        Arrays.sort(arr);
        int average = (int)Math.round((double)sum/N);
        
        Map<Integer, Integer> map = new HashMap<>();
        int maxFreqCount = 0;
        int maxFreqVal=0;
        for(int num : arr){
            int count = map.getOrDefault(num, 0) + 1;
            if(count>maxFreqCount){
                maxFreqCount = count;
                maxFreqVal = num;
            }
            map.put(num, count);
        }

        List<Integer> maxFreq = new ArrayList<>();
        for(Map.Entry<Integer, Integer> entry : map.entrySet()){
            if(entry.getValue() == maxFreqCount) maxFreq.add(entry.getKey());
        }

        if(maxFreq.size()>1) {
            maxFreq.sort((a,b)->a-b);
            maxFreqVal = maxFreq.get(1);
        }

        System.out.printf("%d\n%d\n%d\n%d\n",average, arr[N/2], maxFreqVal, arr[N-1]-arr[0]);
        sc.close();
    }
}