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