#include <bits/stdc++.h>
using namespace std;
int a[1005];
int main() {
  int n;
  cin >> n;
  for (int i = 1; i <= n; i++) {
    cin >> a[i];
  }
  int now = 1000;
  for (int i = 1; i < n; i++) {
    if (a[i] < a[i + 1]) {
      now = now / a[i] * a[i + 1] + now % a[i];
    }
  }
  cout << now << endl;
}
