#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.at(i);
  }
  int money = 1000;
  int stock = 0;
  for (int i = 0; i < n; i++) {
    if (i == n - 1) {
      money += stock * (a.at(i));
    } else if ((a.at(i) < a.at(i + 1)) && (money != 0)) {
      stock += money / (a.at(i));
      money = money % (a.at(i));
    } else if ((a.at(i) > a.at(i + 1)) && (stock != 0)) {
      money += stock * (a.at(i));
      stock = 0;
    }
  }
  cout << money << endl;
}
