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