#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using uint = unsigned int;
const ll mod = (ll)1e9 + 7;
int main() {
  int n;
  cin >> n;
  vector<int> a(n);
  for (int i = 0; i < (n); ++i) cin >> a[i];
  int money = 1000;
  int stock = 0;
  for (int i = 0; i < n - 1;) {
    while (i < n - 1 && a[i] >= a[i + 1]) i++;
    if (i == n - 1) break;
    stock = money / a[i];
    money -= stock * a[i];
    while (i < n - 1 && a[i] <= a[i + 1]) i++;
    money += stock * a[i];
    stock = 0;
    if (i == n - 1) break;
  }
  cout << money << endl;
  return 0;
}
