# include<iostream> # include<iomanip> using namespace std; int main(){ char a; int b; cin>>a; cin>>b; if(a=='P'){ printf("%.2lf",b*0.7); } else if(a=='G'){ printf("%.2lf",b*0.8); } else if(a=='S'){ printf("%.2lf",b*0.9); } else{ printf("%.2lf",b*0.95); } return 0; }