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