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