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