#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
 
int main() {
    int n; 
    cin >> n; // jumlah barang
 
    vector<int> berat(n);
    vector<int> nilai(n);
 
    // Input berat barang
    for (int i = 0; i < n; i++) {
        cin >> berat[i];
    }
 
    // Input nilai barang
    for (int i = 0; i < n; i++) {
        cin >> nilai[i];
    }
 
    int kapasitas;
    cin >> kapasitas; // kapasitas maksimum
 
    // Buat tabel DP
    vector<vector<int>> dp(n + 1, vector<int>(kapasitas + 1, 0));
 
    // Proses perhitungan DP
    for (int i = 1; i <= n; i++) {
        for (int w = 1; w <= kapasitas; w++) {
            if (berat[i - 1] <= w) {
                dp[i][w] = max(nilai[i - 1] + dp[i - 1][w - berat[i - 1]], dp[i - 1][w]);
            } else {
                dp[i][w] = dp[i - 1][w];
            }
        }
    }
 
    cout << dp[n][kapasitas] << endl;
    return 0;
}
 
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