/*
 * 
 * 	^v^
 * 
 */
#include <iostream>
#include <numeric>
#include <set>
#include <iomanip>
#include <chrono>
#include <queue>
#include <string>
#include <vector>
#include <functional>
#include <map>
#include <algorithm>
#include <array>
#include <random>

using namespace std;

using ll = long long int;
using ld = long double;

#define iamtefu ios_base::sync_with_stdio(false); cin.tie(0);
#define fl(i,a,n) for (ll i(a); i<n; i++)
#define rfl(i,a,n) for (ll i(n-1); i>=a; i--)
#define ty int _; for(cin>>_; _--;)
#define print(a) for(auto ele:a){cout<<ele<<" ";}cout<<'\n';

ll gcd(ll a, ll b){
	if (b==0){
		return a;
	}
	return gcd(b, a%b);
}

mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());

ll pw(ll a, ll b, ll m){
	ll res=1;
	a%=m;
	while (b){
		if (b&1){
			res=(res*a)%m;
		}
		a=(a*a)%m;
		b/=2;
	}
	return res;
}

void scn(){
	ll n, m, w; cin>>n>>m>>w;
	vector <ll> a(n), b(n), c(m), d(m);
	fl(i,0,n){
		cin>>a[i];
	}
	fl(i,0,n){
		cin>>b[i];
	}
	fl(i,0,m){
		cin>>c[i];
	}
	fl(i,0,m){
		cin>>d[i];
	}
	ll ans = 0;
	vector <vector <vector <ll>>> dp(n+1, vector <vector <ll>>(m+1, vector <ll>(w+1, -1)));
	auto rec=[&](auto rec, ll i, ll j, ll cw){
		if (cw<0 || cw>w){
			return -(ll)1e18;
		}
		if (i==n && j==m){
			return 0ll;
		}
		// cout<<i<<" "<<cw<<" "<<j<<"\n";
		if (dp[i][j][cw]!=-1){
			return dp[i][j][cw];
		}
		ll an = -1e18;
		fl(l,i,n){
			an = max(an, b[l]+rec(rec, l+1, j, cw+a[l]));
		}
		fl(k,j,m){
			an = max(an, rec(rec, i, k+1, cw-c[k])-d[k]);
		}
		dp[i][j][cw]=an;
		return max(0ll,an);
	};
	ans = rec(rec, 0, 0, 0);
	// for (auto x:dp){
	// 	for (auto y:x){
	// 		print(y)
	// 	}
	// }
	cout<<ans<<'\n';

	// not necessarily distinct
	// right down
}

int main(){
	iamtefu;
#if defined(airths)
	auto t1=chrono::high_resolution_clock::now();
	freopen("input.txt", "r", stdin);
	freopen("output.txt", "w", stdout);
#endif
	// ty
	{
		scn();
	}
#if defined(airths)
	auto t2=chrono::high_resolution_clock::now();
	ld ti=chrono::duration_cast<chrono::nanoseconds>(t2-t1).count();
	ti*=1e-6;
	cerr<<"Time: "<<setprecision(12)<<ti;
	cerr<<"ms\n";
#endif
	return 0;
}