#include <bits/stdc++.h>
using namespace std;
const long long mod = 1000000007;
const int inf = 1e9 + 10;
const long long INF = 1e18;
const long double EPS = 1e-10;
const int dx[8] = {1, 0, -1, 0, 1, -1, -1, 1};
const int dy[8] = {0, 1, 0, -1, 1, 1, -1, -1};
template <class T>
bool chmax(T &a, const T &b) {
  if (a < b) {
    a = b;
    return 1;
  }
  return 0;
}
template <class T>
bool chmin(T &a, const T &b) {
  if (a > b) {
    a = b;
    return 1;
  }
  return 0;
}
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  cout << fixed << setprecision(25);
  long long n;
  cin >> n;
  vector<long long> a(n);
  for (int i = 0; i < (n); ++i) cin >> a[i];
  a.push_back(0);
  int ans = 1000, idx = 0;
  while (idx < n) {
    int mi = a[idx], mx = a[idx];
    while (idx < n && a[idx] <= a[idx + 1]) mx = a[++idx];
    ans = ans / mi * mx + ans % mi;
    idx++;
  }
  cout << ans << '\n';
  return 0;
}
