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