#include <iostream>#include <cstdlib>#include <cstring>#include <cstdio>using namespace std;#define maxn 20int n, m, k;int f[maxn], g[maxn];void input(){ scanf("%d%d%d", &n, &m, &k); for (int i = 0; i < k; i++) scanf("%d", &f[i]); for (int i = 0; i < k; i++) scanf("%d", &g[i]);}void work(){ int ans = 0; for (int i = 0; i < k; i++) if (f[i] > g[i]) ans += f[i] - g[i]; printf("%dn", ans);}int main(){ input(); work(); return 0;}
