#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  vector<int> a(n);
  vector<bool> chan(n, false);
  for (int i = 0; i < (n); i++) cin >> a[i];
  for (int i = 0; i < n - 1; i++) {
    if (a[i] <= a[i + 1]) chan[i] = true;
  }
  int kabu = 0;
  int money = 1000;
  for (int i = 0; i < n; i++) {
    if (chan[i]) {
      kabu += money / a[i];
      money -= ((int)(money / a[i]) * a[i]);
    } else {
      money += (kabu * a[i]);
      kabu = 0;
    }
  }
  cout << money << "\n";
  return 0;
}
