#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    int n, m, k;
    cin >> n >> m >> k;
    vector <int> p(n);
    for (int i = 0; i < n; i++) {
        cin >> p[i];
    }
    vector <int> b(m + 1);
    for (int i = 0; i <= m; i++) {
        cin >> b[i];
    }
    vector <ll> dp(k + 1, 0);
    for (int i = 0; i < n; i++) {
        vector <ll> go(k + 1, 0);
        for (int j = 0; j <= k; j++) {
            for (int x = 0; x <= k; x++) {
                if (x > j) break;
                int add = j - x;
                if (p[i] + add > m) continue;
                go[j] = max(go[j], dp[x] + b[p[i] + add]);
            }
        }
        dp = go;
    }
    ll ans = 0;
    for (int i = 0; i <= k; i++) {
        ans = max(ans, dp[i]);
    }
    cout << ans << '\n';
    return 0;
}