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