#include <bits/stdc++.h>
using namespace std;
const char newl = '\n';
template <class T>
void read(T& t) {
  cin >> t;
}
template <class A, class... B>
void read(A& a, B&... b) {
  read(a);
  read(b...);
}
template <class T>
void read(vector<T>& vt) {
  for (auto& a : vt) read(a);
}
string to_string(bool b) { return (b ? "true" : "false"); }
string to_string(char c) { return string(1, c); }
string to_string(string s) { return s; }
string to_string(const char* str) { return string(str); }
string to_string(vector<bool> vt) {
  string ret;
  bool ft = 1;
  for (bool x : vt) {
    if (!ft) ret += ' ';
    ft = 0;
    ret += char('0' + x);
  }
  return ret;
}
template <class T>
string to_string(vector<T> vt) {
  string ret;
  bool ft = 1;
  for (auto a : vt) {
    if (!ft) ret += ' ';
    ft = 0;
    ret += to_string(a);
  }
  return ret;
}
template <class T>
void write(T t) {
  cout << to_string(t);
}
template <class A, class... B>
void write(A a, B... b) {
  write(a);
  if (sizeof...(b)) write(' ');
  write(b...);
}
void print() { write(newl); }
template <class A, class... B>
void print(A a, B... b) {
  write(a);
  if (sizeof...(b)) write(' ');
  print(b...);
}
int n;
void solve() {
  int ans = 1000, cnt = 0;
  read(n);
  vector<int> a(n);
  read(a);
  for (int i = 1; i < n; ++i) {
    if (a[i - 1] < a[i]) {
      cnt = ans / a[i - 1];
      ans += cnt * (a[i] - a[i - 1]);
    }
  }
  print(ans);
}
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  solve();
}
