#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 maney = 1000;
  for (int i = 0; i < N - 1; i++) {
    if (A.at(i + 1) > A.at(i)) {
      int tmp = maney;
      maney = maney % A.at(i);
      maney = maney + A.at(i + 1) * (tmp / A.at(i));
    }
  }
  cout << maney << endl;
}
