#include <iostream>
#include <vector>

using namespace std;

int main() {
    int N, M, W;
    cin >> N >> M >> W;
    vector<int> A(N), C(M);
    vector<long long> B(N), D(M);
    for ( int i=0; i<N; i++ ) cin >> A[i];
    for ( int i=0; i<N; i++ ) cin >> B[i];
    for ( int i=0; i<M; i++ ) cin >> C[i];
    for ( int i=0; i<M; i++ ) cin >> D[i];

    long long ans = 0;    
    for ( int i=0; i<(1<<(N+M)); i++ ) {
        long long v = 0;
        int w = 0;
        for ( int j=0; j<N+M; j++ ) {
            if ( i & ( 1 << j ) ) {
                if ( j < N ) {
                    w += A[j];
                    v += B[j];
                } else {
                    w -= C[ j - N ];
                    v -= D[ j - N ];
                }
            }
        }
        if ( 0 <= w && w <= W && ans <= v ) ans = v;
    }
    
    cout << ans << endl;
}