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