#include<bits/stdc++.h> using namespace std; int main(){ int a; char b; cin>>b>>a; if(b=='P')scanf("%.2lf/n",a*0.7); else if(b=='G')scanf("%.2lf/n",a*0.8); else if(b=='S')scanf("%.2lf/n",a*0.9); else scanf("%.2lf/n",a*0.95); return 0; }