#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; i++) {
    if (a[i] >= a[i + 1]) continue;
    stock = money / a[i];
    money += stock * (a[i + 1] - a[i]);
  }
  cout << money << endl;
  return 0;
}
