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