#include <bits/stdc++.h>
using namespace std;
const int maxn = 200010;
int n, ans = 1000;
int a[maxn];
int main() {
  cin >> n;
  for (int i = 1; i <= n; i++) cin >> a[i];
  for (int i = 2; i <= n; i++) {
    if (a[i] > a[i - 1]) ans += ans / a[i - 1] * (a[i] - a[i - 1]);
  }
  cout << ans << endl;
}
