#include<bits/stdc++.h> using namespace std; double b; char a; int main(){ cin>>a>>b; switch(a){ case 'P': printf("%.2lf",b*0.7);break; case 'G': printf("%.2lf",b*0.8);break; case 'S': printf("%.2lf",b*0.9);break; default: printf("%.2lf",b*0.95);break; } return 0; }