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