#include<iostream> using namespace std; int main(){ int a; char b; cin>>a>>b; if(a<=1000){ cout<<"8"; }else if(a>1000){ cout<<8+(a-1000/500*4); }else if(b=='y'){ cout<<8+5+(a-1000/500*4); }else{ cout<<8+(a-1000/500*4); } return 0; }