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