#include<iostream>
using namespace std;
int main()
{
int n;
cin >> n;
int a[n];
for(int i=0;i<n;i++)
cin >> a[i];
int i=0,sum=1000;
while(i<(n-1))
{
if(a[i]<a[i+1]){
k=sum/a[i];
sum=sum%a[i];
sum+=k*a[i+1];
i+=2;
}
else
i++;
}
cout << sum << endl;
return 0;
}