#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 mon = 1000;
  for (int i = 0; i < n - 1; i++) {
    if (a[i] < a[i + 1]) {
      mon = mon + mon / a[i] * (a[i + 1] - a[i]);
    }
  }
  cout << mon;
}
