下面是代码：

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n;
	char m;
	cin>>n;
	cin>>m;
	int ans=8,sum=0;
	if(m=='y')
	{
		ans+=5;
	}
	if(n<=1000)
	{
		cout<<ans;
		return 0;
	}
	else
	{
		n-=1000;
		sum=n%500;
		ans=ans+n/500*4;
		if(n%500!=0)
		{
			ans+=4;
		}
	}
	ans=ans+sum*4;
	cout<<ans;
 }