#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
using pil = pair<int, ll>;
using pli = pair<ll, int>;
using pll = pair<ll, ll>;
const int INF = 1e9;
const ll LLINF = 1e18;
const ll MOD = 1e9 + 7;
const double EPS = 1e-10;
const double PI = acos(-1);
template <class T>
inline bool chmax(T& a, T b) {
  if (a < b) {
    a = b;
    return 1;
  }
  return 0;
}
template <class T>
inline bool chmin(T& a, T b) {
  if (a > b) {
    a = b;
    return 1;
  }
  return 0;
}
int main() {
  int n;
  cin >> n;
  vector<int> a(n);
  for (int i = 0; i < n; i++) cin >> a[i];
  int cur = 1000;
  for (int i = 0; i < n - 1; i++) {
    int t = 0;
    if (a[i] < a[i + 1]) t = cur / a[i];
    cur += (a[i + 1] - a[i]) * t;
  }
  cout << cur << endl;
}
