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