#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  int money = 1000;
  int keep;
  cin >> n;
  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]) {
      keep = money / a[i];
      money = money - a[i] * keep;
      money = money + a[i + 1] * keep;
    } else {
      continue;
    }
  }
  cout << money << endl;
}
