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