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