#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, stock = 0;
  for (int i = 1; i < n; i++) {
    if (a[i] > a[i - 1]) {
      stock = yen / a[i - 1];
      yen = yen - stock * a[i - 1];
      yen += stock * a[i];
    }
  }
  cout << yen;
  return 0;
}
