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