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