#include<bits/stdc++.h>
using namespace std;
int main()
{
	int k,s,y;
	char w;
	cin>>k>>w;
	if(k<=1000){
		s=8;
	}if(k>1000) {
		s=8+ceil((k-1000)*1.0/500)*4;	
	}
	if(w=='y') {
		s+=5;
	}
	cout<<s;	
	

	return 0;
 }

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int k,s,y;
	char w;
	cin>>k>>w;
	if(k<=1000){
		s=8;
	}if(k>1000) {
		s=8+ceil((k-1000)*1.0/500)*4;	
	}
	if(w=='y') {
		s+=5;
	}
	cout<<s;	
	

	return 0;
 }

#include<iostream> #include<cmath> using namespace std; int main() { int a,sum; char b; cin>>a>>b; if(a<=1000) { sum=8; } else { sum=8+ceil((a-1000)/500.0)*4; } if(b=='y') { sum=sum+5; } cout<<sum; return 0; }

#include<iostream>
#include<cmath> 
using namespace std;
int main()
{
	int a,sum;
	char b;
	cin>>a>>b;
	if(a<=1000)
	{
		sum=8;
	}
	else
	{
		sum=8+ceil((a-1000)/500.0)*4;
	}
    if(b=='y')
	{
		sum=sum+5;
	}
	cout<<sum;
    return 0;
}