#include<iostream> using namespace std; int main(){ int a[10] = {},i; double sum=0; double b[10] = {28.9,32.7,45.6,78,35,86.2,27.8,43,56,65}; for(i = 0; i < 10;i++) { cin >>a[i]; } for(i = 0; i < 10;i++) { sum += a[i]*b[i]; } cout <<sum<<endl; return 0; }