#include <bits/stdc++.h>
#include <atcoder/all>
#include <boost/multiprecision/cpp_dec_float.hpp>
#include <boost/multiprecision/cpp_int.hpp>
namespace mp = boost::multiprecision;
using Bint = mp::cpp_int;
using namespace std;
using namespace atcoder;
#define rep(i, n) for(int i=0;i<(n);++i)
#define rep1(i, n) for(int i=1;i<=(n);i++)
#define ll long long
using mint = modint998244353;
using P = pair<ll,ll>;
using lb = long double;
using T = tuple<ll, ll, ll>;
#ifdef LOCAL
#  include <debug_print.hpp>
#  define dbg(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
#  define dbg(...) (static_cast<void>(0))
#endif

int main()
{
    int n, d, k;
    cin >> n >> d >> k;
    vector<int> a(n), c(n);
    rep(i,n) cin >> a[i];
    rep(i,n) cin >> c[i];
    vector<vector<ll>> dp(k+1, vector<ll>(d+1, -1e18));
    dp[0][0] = 0;
    rep(i,n) {
        vector<vector<ll>> p(k+1, vector<ll>(d+1, -1e18));
        swap(dp, p);
        for(int j=0;j<=k;j++) for(int l=0;l<=d;l++) {
            if(p[j][l]==-1e18) continue;
            if(l+1<=d) {
                dp[min(j+c[i],k)][l+1] = max(dp[min(j+c[i],k)][l+1],p[j][l]+a[i]);
            }
            dp[j][l] = max(dp[j][l], p[j][l]);
        }
    }
    if(dp[k][d]==-1e18) cout << "No" << endl;
    else cout << dp[k][d] << endl;
    return 0;
}