ll@n,@m,@w,@a[n],@b[],@c[m],@d[],z=0;
vector<array<ll,3>>v;
v.push_back({0,0,0});
while(!v.empty()){
	auto x=v.back();
	v.pop_back();
	if(z<x[2]){
		z=x[2];
	}
	rep(i,n){
		if(!(x[0]&1<<i)&&x[1]+a[i]<=w){
			v.push_back({x[0]|1<<i,x[1]+a[i],x[2]+b[i]});
		}
	}
	rep(i,m){
		if(!(x[0]&1<<n+i)&&x[1]-c[i]>=0){
			v.push_back({x[0]|1<<n+i,x[1]-c[i],x[2]-d[i]});
		}
	}
}
wt(z);