#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.at(i);
  int cash = 1000;
  int stock = 0;
  for (int i = 0; i < n - 1; i++) {
    if (a.at(i) < a.at(i + 1)) {
      stock += cash / a.at(i);
      cash -= stock * a.at(i);
      cash += stock * a.at(i + 1);
      stock -= stock;
    }
  }
  cout << cash << endl;
}
