#include<bits/stdc++.h> using namespace std; float f[10]={28.9,32.7,45.6,78.0,35.0,86.2,27.8,43.0,56.0,65.0}; int main() { int a[10]; float sum=0; for(int i=0;i<10;i++){ cin>>a[i]; } for(int i=0;i<10;i++){ sum+=a[i]*1.0*f[i]; } cout<<sum; return 0; }