#include<bits/stdc++.h>
using namespace std;
int main()
{
  int n;
  cin>>n;
  int arr[n];
  int coin=1000;
  for(int i=0;i<n;i++)cin>arr[i];
  for(int i=0;i<n-1;i++)
  { 
    if(arr[i]<arr[i+1])
    {
       int stock=coin/arr[i];
       coin-=stock*arr[i];
       coin+=stock*arr[i+1];
    }
  }
  cout<<coin;
  return 0;
}