#include using namespace std; int main() { long a; char ch; cin>>a>>ch; if(ch=='n') { if(a<=1000) { cout<<"8"<<endl; } else { cout<<8+(a/500-1)*4<<endl; } } else if(ch=='y') { if(a<=1000) { cout<<"13"<<endl; } else { cout<<13+(a/500-1)*4<<endl; } } }