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