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

class MainClass : Scanner
{
    static void Main()
    {
        int N = RInt();
        var A = RLongs();
        var B = RLongs();
        var C = RLongs();
        Array.Sort(A);
        Array.Sort(B);
        Array.Sort(C);
        Array.Reverse(A);
        Array.Reverse(B);
        Array.Reverse(C);
        long[] ABcnt = new long[N];
        long[] BCcnt = new long[N];
        var DBC = new long[N + 1];
        for (int i = 0; i < N; i++)
        {
            var b = B[i];
            var (lb, ub) = (-1, N);
            while (ub - lb > 1)
            {
                var mid = (lb + ub) / 2;
                if (C[mid]>b) lb = mid;
                else ub = mid;
            }
            BCcnt[i] = ub;
        }
        for (int i = 0; i < N; i++)
        {
            DBC[i + 1] = BCcnt[i] + DBC[i];
        }
        for (int i = 0; i < N; i++)
        {
            var a = A[i];
            var (lb, ub) = (-1, N);
            while (ub - lb > 1)
            {
                var mid = (lb + ub) / 2;
                if (B[mid] > a) lb = mid;
                else ub = mid;
            }
            ABcnt[i] = ub;
        }

        long ans = 0;
        for (int i = 0; i < N; i++)
        {
            ans += DBC[ABcnt[i]];
        }
        WriteLine(ans);
    }
}



class Scanner
{
    public static string RString() => Console.ReadLine();
    public static int RInt() => ReadTuple<int>();
    public static long RLong() => ReadTuple<long>();
    public static double RDouble() => ReadTuple<double>();

    public static string[] RStrings() => Console.ReadLine().Split();
    public static int[] RInts() => Array.ConvertAll(Console.ReadLine().Split(), int.Parse);
    public static long[] RLongs() => Array.ConvertAll(Console.ReadLine().Split(), long.Parse);
    public static double[] RDoubles() => Array.ConvertAll(Console.ReadLine().Split(), double.Parse);
    public static int[] RInts(Func<string, int> func) => Console.ReadLine().Split().Select(func).ToArray();
    public static long[] RLongs(Func<string, long> func) => Console.ReadLine().Split().Select(func).ToArray();
    public static double[] RDoubles(Func<string, double> func) => Console.ReadLine().Split().Select(func).ToArray();
    //public static string[] RStrings(Func<string, string> func) => Console.ReadLine().Split().Select(func).ToArray();

    public static T1 ReadTuple<T1>()
    {
        var r = RString();
        var r1 = (T1)Convert.ChangeType(r, typeof(T1));
        return r1;
    }
    public static (T1, T2) ReadTuple<T1, T2>()
    {
        var r = RStrings();
        var r1 = (T1)Convert.ChangeType(r[0], typeof(T1));
        var r2 = (T2)Convert.ChangeType(r[1], typeof(T2));
        return (r1, r2);
    }
    public static (T1, T2, T3) ReadTuple<T1, T2, T3>()
    {
        var r = RStrings();
        var r1 = (T1)Convert.ChangeType(r[0], typeof(T1));
        var r2 = (T2)Convert.ChangeType(r[1], typeof(T2));
        var r3 = (T3)Convert.ChangeType(r[2], typeof(T3));
        return (r1, r2, r3);
    }
    public static (T1, T2, T3, T4) ReadTuple<T1, T2, T3, T4>()
    {
        var r = RStrings();
        var r1 = (T1)Convert.ChangeType(r[0], typeof(T1));
        var r2 = (T2)Convert.ChangeType(r[1], typeof(T2));
        var r3 = (T3)Convert.ChangeType(r[2], typeof(T3));
        var r4 = (T4)Convert.ChangeType(r[3], typeof(T4));
        return (r1, r2, r3, r4);
    }
}


Measured memory_bytes: 47536