#include<iostream>

using namespace std;

int main(){

int a,b,c,d,e,f,g;

double n;

cin>>a>>b>>c>>d>>e>>f>>g;

n=a1.29+b2.7+c1.1+d0.92+e1+f0.1+g*0.9;

printf("%.2lf",n);

}