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