#include <bits/stdc++.h>
using namespace std;
typedef signed long long ll;

#define _P(...) (void)printf(__VA_ARGS__)
#define FOR(x,to) for(x=0;x<(to);x++)
#define FORR(x,arr) for(auto& x:arr)
#define FORR2(x,y,arr) for(auto& [x,y]:arr)
#define ALL(a) (a.begin()),(a.end())
#define ZERO(a) memset(a,0,sizeof(a))
#define MINUS(a) memset(a,0xff,sizeof(a))
template<class T> bool chmax(T &a, const T &b) { if(a<b){a=b;return 1;}return 0;}
template<class T> bool chmin(T &a, const T &b) { if(a>b){a=b;return 1;}return 0;}
//-------------------------------------------------------

int N,M,K;
int S[2020],A[2020],B[2020];
const ll mo=998244353;

template<class V, int ME> class BIT_mod {
public:
	V bit[1<<ME];
	BIT_mod(){ZERO(bit);};
	V operator()(int e) { if(e<0) return 0; ll s=0;e++;while(e) s+=bit[e-1],e-=e&-e; return s%mo;}
	void add(int e,V v) { e++; v=(v%mo+mo)%mo; while(e<=1<<ME) { bit[e-1]+=v; bit[e-1] -= (bit[e-1]>=mo)?mo:0; e+=e&-e;}}
};
BIT_mod<int,12> bt[2020];

void solve() {
	int i,j,k,l,r,x,y; string s;
	
	cin>>N>>M>>K;
	FOR(i,N) {
		cin>>S[i];
		S[i]--;
	}
	FOR(i,M) cin>>A[i];
	FOR(i,M) cin>>B[i];
	
	bt[0].add(0,1);
	ll sum=0;
	FOR(i,N) {
		ll ret[4040]={};
		FOR(j,K) {
			ll a=bt[j](2020);
			ret[j+A[S[i]]]+=a;
			ret[j+B[S[i]]]+=a;
		}
		FOR(j,K+1) {
			ret[j]%=mo;
			ll a=bt[j](S[i])-bt[j](S[i]-1);
			bt[j].add(S[i],mo-a);
			bt[j].add(S[i],ret[j]);
		}
		sum+=bt[K](2020);
	}
	cout<<sum%mo<<endl;
	
}


int main(int argc,char** argv){
	string s;int i;
	if(argc==1) ios::sync_with_stdio(false), cin.tie(0);
	FOR(i,argc-1) s+=argv[i+1],s+='\n'; FOR(i,s.size()) ungetc(s[s.size()-1-i],stdin);
	cout.tie(0); solve(); return 0;
}