#include <bits/stdc++.h>
using namespace std;
int main() {
  int N;
  cin >> N;
  vector<int> A(N);
  for (int i = 0; i < N; i++) {
    cin >> A.at(i);
  }
  int money = 1000;
  for (int i = 0; i < N - 1; i++) {
    int stock = 0;
    if (A.at(i) < A.at(i + 1)) {
      stock = money / A.at(i);
    }
    money += (A.at(i + 1) - A.at(i)) * stock;
  }
  cout << money << endl;
}
