#include <bits/stdc++.h>   using namespace std;   int main() {     long long a[100], b[100], i, n, m, r;     cin >> n >> m >> r;     long long ans = r;     for (i = 0; i < n; ++i) {       cin >> a[i];     }     for (i = 0; i < m; ++i) {       cin >> b[i];     }     long long minn = *min_element(a, a + n);     long long akcia = r / minn;     r %= minn;     r += akcia * (*max_element(b, b + m));     cout << max(ans, r) << endl;     return 0;   }   