#include <bits/stdc++.h>
using namespace std;
const int INF = 1001001001;
int main() {
  int n;
  cin >> n;
  vector<int> a(n, 0);
  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 diff = a[i + 1] - a[i];
      int num = money / a[i];
      money += diff * num;
    }
  }
  cout << money;
  return 0;
}
