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