#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  vector<int> a(n);
  for (int i = 0; i < n; i++) cin >> a[i];
  int money = 1000;
  int kabu = 0;
  int ans = 0;
  for (int i = 0; i < n; i++) {
    money = money + kabu * a[i];
    kabu = 0;
    if (a[i] < a[i + 1]) {
      kabu = money / a[i];
      money = money - kabu * a[i];
    }
    ans = max(ans, money);
  }
  cout << ans << endl;
}
