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