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