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