#include <iostream>
using namespace std;
int main() {
    int n, res = 0;
    cin >> n;
    for (int tmp, i = 0; i < n; i++) {
        cin >> tmp;
        res -= tmp;
    }
    for (int tmp, i = 0; i < n; i++) {
        cin >> tmp;
        res += tmp;
    }
    cout << res;
    return 0;
}