#include <bits/stdc++.h>
using namespace std;
const long long int INF = 1LL << 60;
const long long int Mod = 1000000007;
using ll = long long int;
using ci = const int;
using vi = vector<int>;
using Vi = vector<long long int>;
using P = pair<int, int>;
using PLL = pair<ll, ll>;
using matrix = vector<vector<ll>>;
template <class T>
bool chmax(T &former, const T &b) {
  if (former < b) {
    former = b;
    return true;
  }
  return false;
}
template <class T>
bool chmin(T &former, const T &b) {
  if (b < former) {
    former = b;
    return true;
  }
  return false;
}
template <class T>
T sqar(T x) {
  return x * x;
}
template <class T>
inline void princ(T x) {
  cout << x << " ";
};
template <class T>
inline void print(T x) {
  cout << x << "\n";
};
template <class T>
inline void Yes(T condition) {
  if (condition)
    cout << "Yes" << endl;
  else
    cout << "No" << endl;
}
template <class T>
inline void YES(T condition) {
  if (condition)
    cout << "YES" << endl;
  else
    cout << "NO" << endl;
}
void solve() {
  int n;
  cin >> n;
  vi a(n);
  for (ll i = 0; i < (ll)n; i++) cin >> a.at(i);
  ll cash = 1000, stock = 0;
  for (ll i = 0; i < (ll)n - 1; i++) {
    if (a[i] < a[i + 1]) {
      int s = cash / a[i];
      cash %= a[i];
      stock += s;
    } else if (a[i] > a[i + 1]) {
      cash += stock * a[i];
      stock = 0;
    }
  }
  cash += stock * a[n - 1];
  print(cash);
  return;
}
int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  std::cout << std::fixed << std::setprecision(30);
  solve();
  return 0;
}
