#include<bits/stdc++.h> using namespace std; int main(){ char a; int b; cin>>a>>b; b+=1; if(a=='P') b*=0.7; else if(a=='G') b*=0.8; else if(a=='S') b*=0.9; else b*=0.95; printf("%.2lf",b*1.0); return 0; }