#include <bits/stdc++.h>
using namespace std;

int main() {
  int N, D, K; cin >> N >> D >> K;
  long long INF = 1e18;
  vector<int> A(N), C(N);
  vector DP(D + 1, vector<long long>(K + 1, -INF));
  for (int &B : A) cin >> B;
  for (int &B : C) cin >> B;
  DP.at(0).at(0) = 0;

  for (int i = 0; i < N; i++) {
    for (int j = D - 1; j >= 0; j--) {
      for (int k = 0; k <= K; k++) {
        if (DP.at(j).at(k) == -1e18) continue;
        int Beauty = min(K, k + C.at(i));
        DP.at(j + 1).at(Beauty) = max(DP.at(j + 1).at(Beauty), DP.at(j).at(k) + A.at(i));
      }
    }
  }
  cout << (DP.at(D).at(K) != -INF ? to_string(DP.at(D).at(K)) : "No") << endl;
}