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