import java.io.BufferedReader;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.io.*;
import java.util.*;
public class Main{static int N=100010;static int a[]=new int[N];static int b[]=new int[N];static int c[]=new int[N];public static void main(String []args) throws IOException {BufferedReader bf=new BufferedReader(new InputStreamReader(System.in));PrintWriter pw = new PrintWriter(new OutputStreamWriter(System.out));int n=Integer.parseInt(bf.readLine());String s[]=bf.readLine().split(" ");for(int i=1;i<=n;i++)a[i]=Integer.parseInt(s[i-1]);	for(int i=1;i<=n;i++)b[i]=Integer.parseInt(s[i-1]);for(int i=1;i<=n;i++)c[i]=Integer.parseInt(s[i-1]);Arrays.sort(a,1,n+1);Arrays.sort(b,1,n+1);Arrays.sort(c,1,n+1);//a[i]<a[j]<a[k]long res=0;for(int i=1;i<=n;i++) {int la=0;int ra=n+1;//二分出数组元素的下标while(la<ra) {int mid=la+ra>>1;if(a[mid]>=b[i])ra=mid;else la=mid+1;}int lb=0;int rb=n+1;while(lb<rb) {int mid=lb+rb+1>>1;if(c[mid]<=b[i])lb=mid;else rb=mid-1;}if(la==0||rb==n+1)continue;res+=(long)(la-1)*(n-lb);}System.out.println(res);}
}

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