#include<bits/stdc++.h>
using namespace std;

int main(){

double n;

int x1,x2,x3,x4,x5,x6,x7,x8,x9,x10;

cin>>x1>>x2>>x3>>x4>>x5>>x6>>x7>>x8>>x9>>x10;

n+=x1*1.0*28.9;

n+=x2*1.0*32.7;

n+=x3*1.0*45.6;

n+=x4*1.0*78;

n+=x5*1.0*35;

n+=x6*1.0*86.2;

n+=x7*1.0*27.8

n+=x8*1.0*43;
n+=x9*1.0*56;

n+=x10*1.0*65;

cout<<fixed<<setprecision(1)<<n;

return 0;
//给不想手写的人
}