#include <iostream>
#include <vector>
#include <string>
#include <cmath>
#include <algorithm>
using namespace std;
int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int N;
    cin >> N;
    vector<int> a(N), b(N);
    for(int i = 0; i < N; i++) cin >> a[i];
    for(int i = 0; i < N; i++) cin >> b[i];
    vector<int> ind(N);
    for(int i = 0; i < N; i++) ind[i] = i;
    int ans = -1;
    int cnt = 1;
    do{
        int res = 0;
        for(int i = 0; i < N; i++){
            if(a[ind[i]] > b[i]) res += a[ind[i]] - b[i];
        }
        if(ans == res) cnt++;
        else if(res > ans){
            ans = res;
            cnt = 1;
        }
    }while(next_permutation(ind.begin(), ind.end()));
    cout << cnt << endl;
}