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