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