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