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