#include <cstdio> using namespace std; int y; double z; char x; int main(){ scanf("%s,%d",&x,&y); if(x=='P'){ z=y*0.7; }if(x=='G'){z=y*0.8; }if(x=='S'){z=y*0.9; }else{z=y*0.95; }printf("%.2lf",z); return 0; }