# include<iostream> # include<iomanip> using namespace std; int main(){ char c; int p; cin>>c>>p; double m; switch (c){ case 'p': m=p*0.7; break; case 'g': m=p*0.8; break; case 's': m=p*0.9; break; case 'c': m=p*0.95; break; cout<<fixed<<setprecision(2)<<m<<endl; } return 0; }