#include <bits/stdc++.h>
using namespace std;
template <class T>
inline bool chmax(T& a, T b) {
  if (a < b) {
    a = b;
    return true;
  }
  return false;
}
template <class T>
inline bool chmin(T& a, T b) {
  if (a > b) {
    a = b;
    return true;
  }
  return false;
}
const long long MOD = 1e9 + 7;
const long long INF = 1e18;
const int MAX = 510000;
const double pi = acos(-1);
int dx[8] = {1, 0, -1, 0, 1, 1, -1, -1};
int dy[8] = {0, 1, 0, -1, -1, 1, 1, -1};
int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  int n;
  cin >> n;
  vector<int> a(n);
  for (long long i = 0; i < (long long)(n); i++) cin >> a[i];
  int money = 1000;
  int stock = 0;
  for (long long i = 0; i < (long long)(n - 1); i++) {
    if (a[i] < a[i + 1]) stock = money / a[i];
    money += (a[i + 1] - a[i]) * stock;
  }
  cout << money << endl;
  return 0;
}
