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