#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using Graph = vector<vector<int>>;
constexpr int INF = 1000000001;
constexpr ll mod = 1000000007;
constexpr double PI = 3.1415926535897932;
template <class T>
inline bool chmin(T& a, T b) {
  if (a > b) {
    a = b;
    return true;
  }
  return false;
}
template <class T>
inline bool chmax(T& a, T b) {
  if (a < b) {
    a = b;
    return true;
  }
  return false;
}
inline void init() {
  cin.tie(nullptr);
  cout.tie(nullptr);
  ios::sync_with_stdio(false);
  cout << fixed << setprecision(15);
}
int main() {
  init();
  int N;
  cin >> N;
  vector<ll> A(N);
  for (int(i) = (0); (i) < (N); ++(i)) cin >> A[i];
  ll ans = 1000;
  for (int(i) = (0); (i) < (N - 1); ++(i)) {
    if (A[i] < A[i + 1]) {
      int stock = ans / A[i];
      ans += (A[i + 1] - A[i]) * stock;
    }
  }
  cout << ans << "\n";
  return 0;
}
