#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
#define fi first
#define se second
#define pb push_back
#define md ((st + nd) >> 1)
#define lc (1 + (idx << 1))
#define rc (2 + (idx << 1))
const int N = 100005;
int a[N], b[N];

int main() {
	//ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	int n;
	scanf("%d", &n);
	for (int i = 0; i < n; i++) {
		scanf("%d", &a[i]);
	}
	for (int i = 0; i < n; i++) {
		scanf("%d", &b[i]);
	}
	ll res = 0;
	for (int i = 0; i < n; i++) {
		res += a[i] - b[i];
	}
	printf("%lld", res);
	return 0;
}