using System;
using System.Linq;
using System.Collections.Generic;

namespace GengaSort
{
    class Program
    {
        static void Main(string[] args)
        {
            int N = int.Parse(Console.ReadLine());
            List<int> An = new List<int>(Console.ReadLine().Split(' ').Select(s => int.Parse(s)).ToArray());
            if (N > An.Count) N = An.Count;
            int ix = 0, count = 0, max,item;
            while(ix > -1)
            {
                ix = -1;
                max = 0;
                for (int i = 0; i < An.Count - 1; i++)
                {
                    if (An[i] > max) max = An[i];
                    if (max > An[i + 1] && (ix == -1 || An[ix] < An[i + 1])) ix = i + 1;
                }
                if (ix > -1)
                {
                    count++;
                    item = An[ix];
                    An.Remove(item);
                    An.Insert(0, item);
                }
            }
            Console.WriteLine(count);
        }
    }
}