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