#include<iostream> using namespace std; int main(){ float a[10]={28.9,32.7,45.6,78,35,86.2,27.8,43,56,65}; float b[10]; for(int n=0;n<=9;n++){ cin>>b[n]; } float m=0; for(int n=0;n<=9;n++){ b[n]*=a[n]; m+=b[n]; } printf("%.1f",m); return 0; }