#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  vector<int> a(n, 0);
  vector<int> dp(n, 0);
  for (int i = 0; i < n; i++) {
    cin >> a[i];
  }
  dp[0] = 1000;
  for (int i = 1; i < n; i++) {
    dp[i] = max(dp[i - 1], dp[i - 1] / a[i - 1] * a[i] + dp[i - 1] % a[i - 1]);
  }
  cout << dp[n - 1] << endl;
  return 0;
}
