#include<bits/stdc++.h> using namespace std; int main() { char a; cin>>a; int p; cin>>p; if(a=='P') { cout<<p*0.7; } else if(a=='G') { cout<<p*0.8; } else if(a=='S') { cout<<p*0.9; } else { cout<<p*0.95; } return 0; }