#include <bits/stdc++.h>
using namespace std;
const long long mod = 1e9 + 7;
int main() {
  int n;
  cin >> n;
  int a[n];
  for (int i = 0; i < n; i++) cin >> a[i];
  int ans = 1000;
  for (int i = 0; i < n - 1; i++) {
    if (a[i] < a[i + 1]) {
      ans = ans + (a[i + 1] - a[i]) * (ans / a[i]);
    }
  }
  cout << ans << endl;
}
