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