using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[][] NArr(long n) => Enumerable.Repeat(0, (int)n).Select(_ => NList).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var a = NList;
        var b = NList;
        for (var i = 0; i < 3; ++i) for (var j = 0; j < 3; ++j)
        {
            (a[i], b[j]) = (b[j], a[i]);
            if (IsKadomatsu(a) && IsKadomatsu(b))
            {
                WriteLine("Yes");
                return;
            }
            (a[i], b[j]) = (b[j], a[i]);
        }
        WriteLine("No");
    }
    static bool IsKadomatsu(int[] a)
    {
        return a[0] != a[2] && ((a[0] < a[1] && a[1] > a[2]) || (a[0] > a[1] && a[1] < a[2]));
    }
}