#include <bits/stdc++.h> using namespace std; int main() { char c; double money; cin>>c>>money; if (c=='P') money*=0.7; else if(c=='G') money*=0.8; else if(c=='S') money*=0.9; else money*=0.95; cout<<fixed<<setprecision(2)<<money<<endl; return 0; }