#include <bits/stdc++.h>
using namespace std;
void __print(int x) { cerr << x; }
void __print(long x) { cerr << x; }
void __print(long long x) { cerr << x; }
void __print(unsigned x) { cerr << x; }
void __print(unsigned long x) { cerr << x; }
void __print(unsigned long long x) { cerr << x; }
void __print(float x) { cerr << x; }
void __print(double x) { cerr << x; }
void __print(long double x) { cerr << x; }
void __print(char x) { cerr << '\'' << x << '\''; }
void __print(const char *x) { cerr << '\"' << x << '\"'; }
void __print(const string &x) { cerr << '\"' << x << '\"'; }
void __print(bool x) { cerr << (x ? "true" : "false"); }
template <typename T, typename V>
void __print(const pair<T, V> &x) {
  cerr << '{';
  __print(x.first);
  cerr << ',';
  __print(x.second);
  cerr << '}';
}
template <typename T>
void __print(const T &x) {
  int f = 0;
  cerr << '{';
  for (auto &i : x) cerr << (f++ ? "," : ""), __print(i);
  cerr << "}";
}
void _print() { cerr << "]\n"; }
template <typename T, typename... V>
void _print(T t, V... v) {
  __print(t);
  if (sizeof...(v)) cerr << ", ";
  _print(v...);
}
const long long int mod = 1e9 + 7;
const double eps = 1e-9;
int n;
const int N = 83;
int a[N];
void solve() {
  cin >> n;
  for (int i = 0; i < n; ++i) cin >> a[i];
  int ans = 1000;
  int s = 0;
  if (s == n) {
    cout << ans << "\n";
    return;
  }
  a[n] = 0;
  while (s < n) {
    while (a[s] >= a[s + 1] && s < n) s++;
    if (s == n) break;
    int t = s;
    while (a[t] <= a[t + 1] && t < n) t++;
    if (a[s] < ans) {
      int sh = ans / a[s];
      ans -= sh * a[s];
      ans += sh * a[t];
    }
    s = t + 1;
  }
  cout << ans << "\n";
}
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  int test = 1;
  while (test--) solve();
  return 0;
}
