#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, num = 0;
  for (int i = 0; i < N - 1; i++) {
    if (A.at(i) < A.at(i + 1)) {
      num = money / A.at(i);
      money -= num * A.at(i);
      money += num * A.at(i + 1);
    }
  }
  cout << money << endl;
  return 0;
}
