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

namespace P10.PoisonousPlants
{
    internal class PoisonousPlants
    {
        static void Main(string[] args)
        {
            int plantsCount = int.Parse(Console.ReadLine());
            int[] pesticidesOfEachPlant = Console.ReadLine()
                .Split(' ', StringSplitOptions.RemoveEmptyEntries)
                .Select(int.Parse)
                .ToArray();

            Stack<int> stack = new Stack<int>(pesticidesOfEachPlant);
            Stack<int> tempStack = new Stack<int>();
            int savedNumber = stack.Pop();

            bool isDayWithoutDying = true;
            int dayWithoutDyingCount = 0;

            while (true)
            {
                if (savedNumber <= stack.Peek())
                {
                    tempStack.Push(savedNumber);
                }
                else
                {
                    isDayWithoutDying = false;
                }

                savedNumber = stack.Pop();

                if (stack.Count == 0)
                {
                    if (isDayWithoutDying || tempStack.Count == 0)
                    {
                        Console.WriteLine(dayWithoutDyingCount);
                        break;
                    }

                    tempStack.Push(savedNumber);
                    dayWithoutDyingCount++;
                    isDayWithoutDying = true;

                    stack = new Stack<int>(tempStack);
                    tempStack.Clear();
                    savedNumber = stack.Pop();
                }
            }
        }
    }
}