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

int main() {
    constexpr ll MOD = 998244353;
    int n, m, k; cin >> n >> m >> k;
    vector<int> s(n), a(m), b(m);
    for(int i = 0; i < n; i++) {
        cin >> s[i];
        s[i]--;
    }
    sort(s.begin(), s.end());
    for(int i = 0; i < m; i++) cin >> a[i];
    for(int i = 0; i < m; i++) cin >> b[i];
    vector<vector<ll>> dp(k+1, vector<ll>(n+1)); // 総和がi、[0, j)を使う
    dp[0][0] = 1;
    vector<int> last_appeared(m, -1);
    for(int i = 0; i < n; i++) {
        for(int j = 0; j <= k; j++) dp[j][i+1] = dp[j][i];
        for(int j = 0; j <= k; j++) {
            for(int c : {a[s[i]], b[s[i]]}) {
                if(j+c <= k) {
                    dp[j+c][i+1] += dp[j][i];
                    if(last_appeared[s[i]] != -1) {
                        dp[j+c][i+1] -= dp[j][last_appeared[s[i]]];
                    }
                    dp[j+c][i+1] %= MOD;
                }
            }
        }
        last_appeared[s[i]] = i;
    }
    ll ans = dp[k][n];
    if(ans < 0) ans += MOD;
    cout << ans << endl;
}