#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ int a,b; cin>>a>>b; switch(a){ case 'P':printf("%.2lf\n",b*0.7);break; case 'G':printf("%.2lf\n",b*0.8);break; case 'S':printf("%.2lf\n",b*0.9);break; default:printf("%.2lf\n",a*0.7);break; } return 0; }