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