#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  int a[80];
  cin >> n;
  for (int i = 0; i < n; ++i) cin >> a[i];
  int money = 1000;
  int stock = 0;
  for (int i = 0; i < n - 1; ++i) {
    if (a[i] < a[i + 1]) {
      stock = money / a[i];
      money = money % a[i];
      money = money + stock * a[i + 1];
      stock = 0;
    }
  }
  cout << money << endl;
  return 0;
}
