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