using System;

namespace No112_ComplicatedTsurukameCalculation
{
    internal class Program
    {
        static void Main(string[] args) {
            int n = int.Parse(Console.ReadLine());
            int[] array = Array.ConvertAll(Console.ReadLine().Split(' '), x => int.Parse(x));
            int total = array[0];
            bool flg = true;
            for(int i = 1; i < n; i++) {
                if(array[i] != total) {
                    if(array[i] < total) {
                        total += 2;
                    } else {
                        total += 4;
                    }
                    flg = false;
                    break;
                }
            }
            if(flg) {
                if(total == 2 * (n - 1)) {
                    total += 2;
                } else {
                    total += 4;
                }
            }
            int diff = (total - 2 * n) / 2;
            Console.WriteLine(string.Format("{0} {1}", n - diff, diff));
        }
    }
}