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