#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  int a[100];
  for (int i = 1; i <= n; i++) cin >> a[i];
  int money = 1000;
  for (int i = 2; i <= n; i++) {
    if (a[i] > a[i - 1]) {
      int stocks = money / a[i - 1];
      money -= stocks * a[i - 1];
      money += stocks * a[i];
    }
  }
  cout << money << endl;
  return 0;
}
