#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  int n, x = 1000;
  cin >> n;
  int a[n];
  for (int i = 0; i < n; i++) {
    cin >> a[i];
  }
  for (int i = 1; i < n; i++) {
    if (a[i] > a[i - 1]) {
      int u = x / a[i - 1];
      x %= a[i - 1];
      x += a[i] * u;
    }
  }
  cout << x << endl;
}
