#include <bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c;
	char d;
	cin>>a>>d;
	if(a<=1000){
		b=8;
	}
	else if(a>1000){
		c=(a-1000)/500;
		c=ceil(c);
		b=8+4*c;
	}
	else if(d=='y'){
		b+=5;
	}
	else if(d=='n'){
		b=b;
	}
	cout<<b<<endl;
	return 0;
}