#include<bits/stdc++.h> using namespace std; int main() {

int t;
char c;
cin>>t>>c;
int s=8;
t=t-1000;
if(t>0)
{
	int h=t/500;
	if(t%500!=0)
	{
		h=h+1;
	}
	s=s+h*4;
}
if(c=='y')
{
	s=s+5;
}
cout<<s;
return 0; 

}