#include<cstdio>
using namespace std;
int main(){
    int a,s,d,f,g,h,j;
    cin>>A>>s>>d>>f>>G>>h>>j;
    cout<<a*1.29+s*2.7
}

#include<iostream> #include<cstdio> using namespace std; int main(){ int a,s,d,f,g,h,j; cin>>A>>s>>d>>f>>G>>h>>j; cout<<a1.29+s2.7 }