#include<bits/stdc++.h> using namespace std; int main(){ int n,p=0; char y; cin>>n>>y; if(n<=1000)p+=8; if(n>1000){ if(n%500==0) p+=n/500*4; else{ p+=+4+12; }

}
if(y=='y')p+=5;
cout<<p; 

return 0; }