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