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