#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  int n;
  cin >> n;
  int arr[n];
  for (int i = 0; i < n; i++) cin >> arr[i];
  int curr_money = 1000;
  int stocks = 0;
  int rem_money = 0;
  stocks = curr_money / arr[0];
  rem_money = curr_money % arr[0];
  int toggle = 0;
  for (int i = 1; i < n; i++) {
    if (arr[i - 1] >= arr[i]) {
      stocks = curr_money / arr[i];
      rem_money = curr_money % arr[i];
    } else {
      curr_money = rem_money + stocks * arr[i];
    }
  }
  cout << curr_money << endl;
  return 0;
}
