#include <bits/stdc++.h>
using namespace std;
#define int long long
#define rep(i,n) for(int i=0;i<n;i++)

signed main(){
  int n;
  cin>>n;
  int r[n],g[n],b[n];
  rep(i,n) cin>>r[i];
  rep(i,n) cin>>g[i];  
  rep(i,n) cin>>b[i];
  sort(r,r+n);
  sort(g,g+n);
  sort(b,b+n);
  int cnt=0;
  rep(i,n){
    rep(j,n){
      if(r[i]<g[j]) break;
      rep(k,n){
        if(r[i]<b[k]) break;
        if(r[i]<g[j]+b[k]) cnt++;
      }
    }
  }
  cout<<cnt<<endl;  
  return 0;
}