#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 money = 1000;
  for (int i = 0; i < n - 1; i++) {
    int stocks = money / a[i];
    money += stocks * max(a[i + 1] - a[i], 0);
  }
  cout << money;
}
