#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int main() {
  int n;
  cin >> n;
  vector<int> a(n, 0);
  for (int i = 0; i < n; i++) {
    cin >> a[i];
  }
  ll gold = 1000;
  int kb = 0;
  int sell = 0;
  for (int i = 0; i < n; i++) {
    for (int k = i + 1; k < n; k++) {
      if (a[i] < a[k]) {
        kb = gold / a[i];
        gold = gold - a[i] * kb;
        gold = gold + a[k] * kb;
        kb = 0;
        i = k;
      } else if (a[i] > a[k]) {
        i = k;
      }
    }
  }
  cout << gold << endl;
}
