#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];
  n--;
  ll money = 1000;
  int kabu = 0;
  for (int i = 0; i < n; 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;
    }
  }
  cout << money + kabu * a[n] << endl;
}
