AC

#include <iostream>
using namespace std;
int main(){
int x,sum=8;
char c;
cin>>x>>c;
if(x>1000){
x-=1000;
sum=sum+x/500*4;

if(x%500!=0){
    sum+=4;
}
}
if(c=='y'){
    sum+=5;
}
cout << sum;
return 0;

}