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