#include <bits/stdc++.h>
const int MOD = 1e9 + 7;
const int MOOD = 998244353;
using namespace std;
int main() {
  int n;
  cin >> n;
  vector<int> a(n), diff(n);
  for (int i = 0; i < n; i++) cin >> a[i];
  for (int i = 0; i < n - 1; i++) {
    if (a[i] <= a[i + 1])
      diff[i] = 1;
    else
      diff[i] = 0;
  }
  int kabu = 0;
  int money = 1000;
  for (int i = 0; i < n - 1; i++) {
    if (diff[i] == 0) {
      money += kabu * a[i];
      kabu = 0;
    } else {
      kabu += money / a[i];
      money %= a[i];
    }
  }
  money += kabu * a[n - 1];
  cout << money << endl;
  return 0;
}
